856152757 has 8 divisors (see below), whose sum is σ = 859578552. Its totient is φ = 852734400.

The previous prime is 856152709. The next prime is 856152769. The reversal of 856152757 is 757251658.

It can be written as a sum of positive squares in 4 ways, for example, as 5788836 + 850363921 = 2406^2 + 29161^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-856152757 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 (856152707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344403 + ... + 346879.

It is an arithmetic number, because the mean of its divisors is an integer number (107447319).

Almost surely, 2^856152757 is an apocalyptic number.

It is an amenable number.

856152757 is a deficient number, since it is larger than the sum of its proper divisors (3425795).

856152757 is a wasteful number, since it uses less digits than its factorization.

856152757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3719.

The product of its digits is 588000, while the sum is 46.

The square root of 856152757 is about 29260.0881235857. The cubic root of 856152757 is about 949.5483566923.

The spelling of 856152757 in words is "eight hundred fifty-six million, one hundred fifty-two thousand, seven hundred fifty-seven".