87715858 has 8 divisors (see below), whose sum is σ = 132301260. Its totient is φ = 43615440.

The previous prime is 87715787. The next prime is 87715883. The reversal of 87715858 is 85851778.

It can be written as a sum of positive squares in 2 ways, for example, as 87553449 + 162409 = 9357^2 + 403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120793 + ... + 121516.

Almost surely, 2^87715858 is an apocalyptic number.

87715858 is a deficient number, since it is larger than the sum of its proper divisors (44585402).

87715858 is a wasteful number, since it uses less digits than its factorization.

87715858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242492.

The product of its digits is 627200, while the sum is 49.

The square root of 87715858 is about 9365.6744551580. The cubic root of 87715858 is about 444.3167699981.

The spelling of 87715858 in words is "eighty-seven million, seven hundred fifteen thousand, eight hundred fifty-eight".