87476564 has 18 divisors (see below), whose sum is σ = 178077690. Its totient is φ = 37489872.

The previous prime is 87476563. The next prime is 87476569. The reversal of 87476564 is 46567478.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 65480464 + 21996100 = 8092^2 + 4690^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87476563) 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 5 ways as a sum of consecutive naturals, for example, 222959 + ... + 223350.

It is an arithmetic number, because the mean of its divisors is an integer number (9893205).

Almost surely, 2^87476564 is an apocalyptic number.

It is an amenable number.

87476564 is an abundant number, since it is smaller than the sum of its proper divisors (90601126).

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

87476564 is a wasteful number, since it uses less digits than its factorization.

87476564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446327 (or 446318 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 47.

The square root of 87476564 is about 9352.8906761493. The cubic root of 87476564 is about 443.9123612974.

The spelling of 87476564 in words is "eighty-seven million, four hundred seventy-six thousand, five hundred sixty-four".