68979912 has 32 divisors (see below), whose sum is σ = 176462880. Its totient is φ = 22458240.

The previous prime is 68979907. The next prime is 68979943. The reversal of 68979912 is 21997986.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32389 + ... + 34452.

It is an arithmetic number, because the mean of its divisors is an integer number (5514465).

Almost surely, 2^68979912 is an apocalyptic number.

It is an amenable number.

68979912 is an abundant number, since it is smaller than the sum of its proper divisors (107482968).

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

68979912 is a wasteful number, since it uses less digits than its factorization.

68979912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66893 (or 66889 counting only the distinct ones).

The product of its digits is 489888, while the sum is 51.

The square root of 68979912 is about 8305.4146193914. The cubic root of 68979912 is about 410.1167860846.

It can be divided in two parts, 689 and 79912, that added together give a triangular number (80601 = T₄₀₁).

The spelling of 68979912 in words is "sixty-eight million, nine hundred seventy-nine thousand, nine hundred twelve".