68979272 has 32 divisors (see below), whose sum is σ = 137700000. Its totient is φ = 32300928.

The previous prime is 68979271. The next prime is 68979283. The reversal of 68979272 is 27297986.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 68979272.

It is not an unprimeable number, because it can be changed into a prime (68979271) 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, 10979 + ... + 16077.

It is an arithmetic number, because the mean of its divisors is an integer number (4303125).

Almost surely, 2^68979272 is an apocalyptic number.

It is an amenable number.

68979272 is a deficient number, since it is larger than the sum of its proper divisors (68720728).

68979272 is a wasteful number, since it uses less digits than its factorization.

68979272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213 (or 5209 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The square root of 68979272 is about 8305.3760902201. The cubic root of 68979272 is about 410.1155177175.

The spelling of 68979272 in words is "sixty-eight million, nine hundred seventy-nine thousand, two hundred seventy-two".