86715625 has 12 divisors (see below), whose sum is σ = 108391500. Its totient is φ = 69370000.

The previous prime is 86715617. The next prime is 86715683. The reversal of 86715625 is 52651768.

It can be written as a sum of positive squares in 6 ways, for example, as 78712384 + 8003241 = 8872^2 + 2829^2 .

It is not a de Polignac number, because 86715625 - 2³ = 86715617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10750 + ... + 16999.

It is an arithmetic number, because the mean of its divisors is an integer number (9032625).

Almost surely, 2^86715625 is an apocalyptic number.

It is an amenable number.

86715625 is a deficient number, since it is larger than the sum of its proper divisors (21675875).

86715625 is an frugal number, since it uses more digits than its factorization.

86715625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27774 (or 27754 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 86715625 is about 9312.1224755691. The cubic root of 86715625 is about 442.6214462318.

The spelling of 86715625 in words is "eighty-six million, seven hundred fifteen thousand, six hundred twenty-five".