870507 has 20 divisors (see below), whose sum is σ = 1420056. Its totient is φ = 527040.

The previous prime is 870497. The next prime is 870517. The reversal of 870507 is 705078.

870507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (870497) and next prime (870517).

It is not a de Polignac number, because 870507 - 2⁴ = 870491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

870507 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870507.

It is not an unprimeable number, because it can be changed into a prime (870517) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 403 + ... + 1379.

2⁸⁷⁰⁵⁰⁷ is an apocalyptic number.

870507 is a deficient number, since it is larger than the sum of its proper divisors (549549).

870507 is a wasteful number, since it uses less digits than its factorization.

870507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000 (or 991 counting only the distinct ones).

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

The square root of 870507 is about 933.0096462524. The cubic root of 870507 is about 95.4825676541.

The spelling of 870507 in words is "eight hundred seventy thousand, five hundred seven".