87879615 has 32 divisors (see below), whose sum is σ = 144460800. Its totient is φ = 45601920.

The previous prime is 87879587. The next prime is 87879641. The reversal of 87879615 is 51697878.

It is not a de Polignac number, because 87879615 - 2¹² = 87875519 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96010 + ... + 96920.

It is an arithmetic number, because the mean of its divisors is an integer number (4514400).

Almost surely, 2^87879615 is an apocalyptic number.

87879615 is a deficient number, since it is larger than the sum of its proper divisors (56581185).

87879615 is a wasteful number, since it uses less digits than its factorization.

87879615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087.

The product of its digits is 846720, while the sum is 51.

The square root of 87879615 is about 9374.4127816093. The cubic root of 87879615 is about 444.5930968838.

The spelling of 87879615 in words is "eighty-seven million, eight hundred seventy-nine thousand, six hundred fifteen".