87321264 has 40 divisors (see below), whose sum is σ = 237455040. Its totient is φ = 27574848.

The previous prime is 87321251. The next prime is 87321277. The reversal of 87321264 is 46212378.

It is an interprime number because it is at equal distance from previous prime (87321251) and next prime (87321277).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46962 + ... + 48785.

It is an arithmetic number, because the mean of its divisors is an integer number (5936376).

Almost surely, 2^87321264 is an apocalyptic number.

It is an amenable number.

87321264 is an abundant number, since it is smaller than the sum of its proper divisors (150133776).

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

87321264 is a wasteful number, since it uses less digits than its factorization.

87321264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95777 (or 95771 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 87321264 is about 9344.5847419776. The cubic root of 87321264 is about 443.6495083162.

The spelling of 87321264 in words is "eighty-seven million, three hundred twenty-one thousand, two hundred sixty-four".