689999

Appears in sequences

• a(n) is the smallest composite number with the sum of digits = the n-th composite number.at n=33A073866
• a(1)=0, a(n+1) is the smallest nonprime with sum of digits > sum of digits of a(n).at n=46A156673
• The smallest composite number larger than the n-th composite number, which has a sum of digits equal to the n-th composite number.at n=33A161551
• Smallest n-digit integer x such that x + A007954(x) has n+1 digits, where A007954(x) is the product of decimal digits of x.at n=5A243219
• The semiprimes which set new records for the sum of their decimal digits.at n=37A257652
• Numbers k with digits in nondecreasing order and each digit > 1 such that the iterated product of digits of k is a prime and k is the least positive integer with this property and its product of digits.at n=34A333960
• Numbers that have the largest possible remainder when divided by their digit sum.at n=15A348799