87664814 has 4 divisors (see below), whose sum is σ = 131497224. Its totient is φ = 43832406.

The previous prime is 87664789. The next prime is 87664853. The reversal of 87664814 is 41846678.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×87664814² = 15370239227309192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21916202 + ... + 21916205.

It is an arithmetic number, because the mean of its divisors is an integer number (32874306).

Almost surely, 2^87664814 is an apocalyptic number.

87664814 is a deficient number, since it is larger than the sum of its proper divisors (43832410).

87664814 is a wasteful number, since it uses less digits than its factorization.

87664814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43832409.

The product of its digits is 258048, while the sum is 44.

The square root of 87664814 is about 9362.9490012496. The cubic root of 87664814 is about 444.2305670148.

The spelling of 87664814 in words is "eighty-seven million, six hundred sixty-four thousand, eight hundred fourteen".