870057 has 12 divisors (see below), whose sum is σ = 1264900. Its totient is φ = 576288.

The previous prime is 870049. The next prime is 870059. The reversal of 870057 is 750078.

870057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 385641 + 484416 = 621^2 + 696^2 .

It is not a de Polignac number, because 870057 - 2³ = 870049 is a prime.

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 870057.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870057.

It is not an unprimeable number, because it can be changed into a prime (870059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2319 + ... + 2667.

2⁸⁷⁰⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

870057 is a deficient number, since it is larger than the sum of its proper divisors (394843).

870057 is a wasteful number, since it uses less digits than its factorization.

870057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 870057 is about 932.7684600157. The cubic root of 870057 is about 95.4661118946.

The spelling of 870057 in words is "eight hundred seventy thousand, fifty-seven".