870432564 has 24 divisors (see below), whose sum is σ = 2101044960. Its totient is φ = 280139104.

The previous prime is 870432553. The next prime is 870432569. The reversal of 870432564 is 465234078.

It is a happy number.

It is a super-2 number, since 2×870432564² = 1515305696943228192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870432569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250274 + ... + 1250969.

It is an arithmetic number, because the mean of its divisors is an integer number (87543540).

Almost surely, 2^870432564 is an apocalyptic number.

It is an amenable number.

870432564 is an abundant number, since it is smaller than the sum of its proper divisors (1230612396).

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

870432564 is a wasteful number, since it uses less digits than its factorization.

870432564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501279 (or 2501277 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 870432564 is about 29503.0941428183. The cubic root of 870432564 is about 954.7984604359.

The spelling of 870432564 in words is "eight hundred seventy million, four hundred thirty-two thousand, five hundred sixty-four".