87636125 has 8 divisors (see below), whose sum is σ = 109370040. Its totient is φ = 70108800.

The previous prime is 87636097. The next prime is 87636127. The reversal of 87636125 is 52163678.

It can be written as a sum of positive squares in 4 ways, for example, as 232324 + 87403801 = 482^2 + 9349^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87636125 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87636127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350420 + ... + 350669.

It is an arithmetic number, because the mean of its divisors is an integer number (13671255).

Almost surely, 2^87636125 is an apocalyptic number.

It is an amenable number.

87636125 is a deficient number, since it is larger than the sum of its proper divisors (21733915).

87636125 is an equidigital number, since it uses as much as digits as its factorization.

87636125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701104 (or 701094 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 87636125 is about 9361.4168265279. The cubic root of 87636125 is about 444.1821024117.

The spelling of 87636125 in words is "eighty-seven million, six hundred thirty-six thousand, one hundred twenty-five".