87164664 has 32 divisors (see below), whose sum is σ = 227387520. Its totient is φ = 27791456.

The previous prime is 87164663. The next prime is 87164681. The reversal of 87164664 is 46646178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87164663) 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, 78402 + ... + 79505.

It is an arithmetic number, because the mean of its divisors is an integer number (7105860).

Almost surely, 2^87164664 is an apocalyptic number.

It is an amenable number.

87164664 is an abundant number, since it is smaller than the sum of its proper divisors (140222856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87164664 is a wasteful number, since it uses less digits than its factorization.

87164664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157939 (or 157935 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 87164664 is about 9336.2017973049. The cubic root of 87164664 is about 443.3841392519.

The spelling of 87164664 in words is "eighty-seven million, one hundred sixty-four thousand, six hundred sixty-four".