87185265 has 32 divisors (see below), whose sum is σ = 150512256. Its totient is φ = 42931200.

The previous prime is 87185257. The next prime is 87185279. The reversal of 87185265 is 56258178.

It is not a de Polignac number, because 87185265 - 2³ = 87185257 is a prime.

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, 10290 + ... + 16740.

It is an arithmetic number, because the mean of its divisors is an integer number (4703508).

Almost surely, 2^87185265 is an apocalyptic number.

87185265 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87185265 is a deficient number, since it is larger than the sum of its proper divisors (63326991).

87185265 is a wasteful number, since it uses less digits than its factorization.

87185265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529.

The product of its digits is 134400, while the sum is 42.

The square root of 87185265 is about 9337.3050180446. The cubic root of 87185265 is about 443.4190671562.

The spelling of 87185265 in words is "eighty-seven million, one hundred eighty-five thousand, two hundred sixty-five".