87650865 has 24 divisors (see below), whose sum is σ = 152275968. Its totient is φ = 46640160.

The previous prime is 87650863. The next prime is 87650867. The reversal of 87650865 is 56805678.

87650865 is a `hidden beast` number, since 87 + 6 + 508 + 65 = 666.

It is an interprime number because it is at equal distance from previous prime (87650863) and next prime (87650867).

It is not a de Polignac number, because 87650865 - 2¹ = 87650863 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87650865.

It is not an unprimeable number, because it can be changed into a prime (87650863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20112 + ... + 24078.

It is an arithmetic number, because the mean of its divisors is an integer number (6344832).

Almost surely, 2^87650865 is an apocalyptic number.

It is an amenable number.

87650865 is a deficient number, since it is larger than the sum of its proper divisors (64625103).

87650865 is a wasteful number, since it uses less digits than its factorization.

87650865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4469 (or 4466 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 87650865 is about 9362.2040674192. The cubic root of 87650865 is about 444.2070041561.

The spelling of 87650865 in words is "eighty-seven million, six hundred fifty thousand, eight hundred sixty-five".