864724957 has 8 divisors (see below), whose sum is σ = 874288512. Its totient is φ = 855208800.

The previous prime is 864724921. The next prime is 864724961. The reversal of 864724957 is 759427468.

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

It is a de Polignac number, because none of the positive numbers 2^k-864724957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864724967) 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, 25482 + ... + 48772.

It is an arithmetic number, because the mean of its divisors is an integer number (109286064).

Almost surely, 2^864724957 is an apocalyptic number.

It is an amenable number.

864724957 is a deficient number, since it is larger than the sum of its proper divisors (9563555).

864724957 is a wasteful number, since it uses less digits than its factorization.

864724957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23699.

The product of its digits is 3386880, while the sum is 52.

The square root of 864724957 is about 29406.2060966729. The cubic root of 864724957 is about 952.7069450206.

The spelling of 864724957 in words is "eight hundred sixty-four million, seven hundred twenty-four thousand, nine hundred fifty-seven".