87664330 has 32 divisors (see below), whose sum is σ = 171609984. Its totient is φ = 32049216.

The previous prime is 87664321. The next prime is 87664333. The reversal of 87664330 is 3346678.

It is a happy number.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 87664330.

It is not an unprimeable number, because it can be changed into a prime (87664333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10117 + ... + 16663.

It is an arithmetic number, because the mean of its divisors is an integer number (5362812).

Almost surely, 2^87664330 is an apocalyptic number.

87664330 is a deficient number, since it is larger than the sum of its proper divisors (83945654).

87664330 is a wasteful number, since it uses less digits than its factorization.

87664330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 87664330 is about 9362.9231546563. The cubic root of 87664330 is about 444.2297494767.

The spelling of 87664330 in words is "eighty-seven million, six hundred sixty-four thousand, three hundred thirty".