864552087 has 48 divisors (see below), whose sum is σ = 1483622400. Its totient is φ = 474724800.

The previous prime is 864552071. The next prime is 864552131. The reversal of 864552087 is 780255468.

864552087 is a `hidden beast` number, since 8 + 6 + 45 + 520 + 87 = 666.

It is not a de Polignac number, because 864552087 - 2⁴ = 864552071 is a prime.

It is a super-2 number, since 2×864552087² = 1494900622272111138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864552047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 289512 + ... + 292482.

It is an arithmetic number, because the mean of its divisors is an integer number (30908800).

Almost surely, 2^864552087 is an apocalyptic number.

864552087 is a deficient number, since it is larger than the sum of its proper divisors (619070313).

864552087 is a wasteful number, since it uses less digits than its factorization.

864552087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164 (or 3161 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 864552087 is about 29403.2666042397. The cubic root of 864552087 is about 952.6434545337.

The spelling of 864552087 in words is "eight hundred sixty-four million, five hundred fifty-two thousand, eighty-seven".