87572164 has 9 divisors (see below), whose sum is σ = 153284047. Its totient is φ = 43776724.

The previous prime is 87572161. The next prime is 87572207. The reversal of 87572164 is 46127578.

The square root of 87572164 is 9358.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87572161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 16377 + ... + 21055.

Almost surely, 2^87572164 is an apocalyptic number.

87572164 is the 9358-th square number.

It is an amenable number.

87572164 is a deficient number, since it is larger than the sum of its proper divisors (65711883).

87572164 is an frugal number, since it uses more digits than its factorization.

87572164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9362 (or 4681 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The cubic root of 87572164 is about 444.0740143906.

The spelling of 87572164 in words is "eighty-seven million, five hundred seventy-two thousand, one hundred sixty-four".