68931976 has 16 divisors (see below), whose sum is σ = 129830400. Its totient is φ = 34310544.

The previous prime is 68931971. The next prime is 68931979. The reversal of 68931976 is 67913986.

It is not an unprimeable number, because it can be changed into a prime (68931971) by changing a digit.

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, 17536 + ... + 21103.

It is an arithmetic number, because the mean of its divisors is an integer number (8114400).

Almost surely, 2^68931976 is an apocalyptic number.

It is an amenable number.

68931976 is a deficient number, since it is larger than the sum of its proper divisors (60898424).

68931976 is a wasteful number, since it uses less digits than its factorization.

68931976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38868 (or 38864 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 68931976 is about 8302.5282896236. The cubic root of 68931976 is about 410.0217636672.

The spelling of 68931976 in words is "sixty-eight million, nine hundred thirty-one thousand, nine hundred seventy-six".