68957992 has 16 divisors (see below), whose sum is σ = 136101600. Its totient is φ = 32664240.

The previous prime is 68957989. The next prime is 68958031. The reversal of 68957992 is 29975986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226684 + ... + 226987.

It is an arithmetic number, because the mean of its divisors is an integer number (8506350).

Almost surely, 2^68957992 is an apocalyptic number.

It is an amenable number.

68957992 is a deficient number, since it is larger than the sum of its proper divisors (67143608).

68957992 is a wasteful number, since it uses less digits than its factorization.

68957992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453696 (or 453692 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 55.

The square root of 68957992 is about 8304.0948934848. The cubic root of 68957992 is about 410.0733400431.

The spelling of 68957992 in words is "sixty-eight million, nine hundred fifty-seven thousand, nine hundred ninety-two".