870564 has 12 divisors (see below), whose sum is σ = 2031344. Its totient is φ = 290184.

The previous prime is 870547. The next prime is 870577. The reversal of 870564 is 465078.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

870564 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36262 + ... + 36285.

2⁸⁷⁰⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

870564 is an abundant number, since it is smaller than the sum of its proper divisors (1160780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

870564 is a wasteful number, since it uses less digits than its factorization.

870564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72554 (or 72552 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 870564 is about 933.0401920603. The cubic root of 870564 is about 95.4846516456.

The spelling of 870564 in words is "eight hundred seventy thousand, five hundred sixty-four".