87639536 has 10 divisors (see below), whose sum is σ = 169801632. Its totient is φ = 43819760.

The previous prime is 87639529. The next prime is 87639553. The reversal of 87639536 is 63593678.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2738720 + ... + 2738751.

Almost surely, 2^87639536 is an apocalyptic number.

It is an amenable number.

87639536 is a deficient number, since it is larger than the sum of its proper divisors (82162096).

87639536 is a wasteful number, since it uses less digits than its factorization.

87639536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5477479 (or 5477473 counting only the distinct ones).

The product of its digits is 816480, while the sum is 47.

The square root of 87639536 is about 9361.5990087164. The cubic root of 87639536 is about 444.1878652008.

The spelling of 87639536 in words is "eighty-seven million, six hundred thirty-nine thousand, five hundred thirty-six".