857610957 has 16 divisors (see below), whose sum is σ = 1316241920. Its totient is φ = 486536112.

The previous prime is 857610911. The next prime is 857610973. The reversal of 857610957 is 759016758.

It is not a de Polignac number, because 857610957 - 2¹⁰ = 857609933 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857610557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143983 + ... + 149820.

It is an arithmetic number, because the mean of its divisors is an integer number (82265120).

Almost surely, 2^857610957 is an apocalyptic number.

It is an amenable number.

857610957 is a deficient number, since it is larger than the sum of its proper divisors (458630963).

857610957 is a wasteful number, since it uses less digits than its factorization.

857610957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293952.

The product of its (nonzero) digits is 529200, while the sum is 48.

The square root of 857610957 is about 29284.9954242783. The cubic root of 857610957 is about 950.0871414063.

The spelling of 857610957 in words is "eight hundred fifty-seven million, six hundred ten thousand, nine hundred fifty-seven".