68185992 has 32 divisors (see below), whose sum is σ = 194817600. Its totient is φ = 19481664.

The previous prime is 68185991. The next prime is 68186011. The reversal of 68185992 is 29958186.

It is a happy number.

It is a super-3 number, since 3×68185992³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68185991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202767 + ... + 203102.

It is an arithmetic number, because the mean of its divisors is an integer number (6088050).

Almost surely, 2^68185992 is an apocalyptic number.

It is an amenable number.

68185992 is an abundant number, since it is smaller than the sum of its proper divisors (126631608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68185992 is a wasteful number, since it uses less digits than its factorization.

68185992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405885 (or 405881 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 68185992 is about 8257.4809718219. The cubic root of 68185992 is about 408.5373063213.

The spelling of 68185992 in words is "sixty-eight million, one hundred eighty-five thousand, nine hundred ninety-two".