87915070 has 32 divisors (see below), whose sum is σ = 167360256. Its totient is φ = 33196800.

The previous prime is 87915053. The next prime is 87915187. The reversal of 87915070 is 7051978.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9252 + ... + 16168.

It is an arithmetic number, because the mean of its divisors is an integer number (5230008).

Almost surely, 2^87915070 is an apocalyptic number.

87915070 is a deficient number, since it is larger than the sum of its proper divisors (79445186).

87915070 is a wasteful number, since it uses less digits than its factorization.

87915070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6996.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 87915070 is about 9376.3036426942. The cubic root of 87915070 is about 444.6528791547.

It can be divided in two parts, 8791 and 5070, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 87915070 in words is "eighty-seven million, nine hundred fifteen thousand, seventy".