87859215 has 64 divisors (see below), whose sum is σ = 162846720. Its totient is φ = 44910720.

The previous prime is 87859181. The next prime is 87859231. The reversal of 87859215 is 51295878.

It is a happy number.

It is not a de Polignac number, because 87859215 - 2¹⁶ = 87793679 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 386932 + ... + 387158.

It is an arithmetic number, because the mean of its divisors is an integer number (2544480).

Almost surely, 2^87859215 is an apocalyptic number.

87859215 is a deficient number, since it is larger than the sum of its proper divisors (74987505).

87859215 is a wasteful number, since it uses less digits than its factorization.

87859215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 343 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 87859215 is about 9373.3246503042. The cubic root of 87859215 is about 444.5586922380.

The spelling of 87859215 in words is "eighty-seven million, eight hundred fifty-nine thousand, two hundred fifteen".