68932731 has 8 divisors (see below), whose sum is σ = 105040384. Its totient is φ = 39390120.

The previous prime is 68932727. The next prime is 68932751. The reversal of 68932731 is 13723986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68932731 - 2² = 68932727 is a prime.

It is a super-2 number, since 2×68932731² = 9503442806236722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68932731.

It is not an unprimeable number, because it can be changed into a prime (68932711) 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, 1641235 + ... + 1641276.

It is an arithmetic number, because the mean of its divisors is an integer number (13130048).

Almost surely, 2^68932731 is an apocalyptic number.

68932731 is a deficient number, since it is larger than the sum of its proper divisors (36107653).

68932731 is a wasteful number, since it uses less digits than its factorization.

68932731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3282521.

The product of its digits is 54432, while the sum is 39.

The square root of 68932731 is about 8302.5737575766. The cubic root of 68932731 is about 410.0232606276.

The spelling of 68932731 in words is "sixty-eight million, nine hundred thirty-two thousand, seven hundred thirty-one".