87732506 has 4 divisors (see below), whose sum is σ = 131598762. Its totient is φ = 43866252.

The previous prime is 87732431. The next prime is 87732517. The reversal of 87732506 is 60523778.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 84474481 + 3258025 = 9191^2 + 1805^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87732506.

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, 21933125 + ... + 21933128.

Almost surely, 2^87732506 is an apocalyptic number.

87732506 is a deficient number, since it is larger than the sum of its proper divisors (43866256).

87732506 is a wasteful number, since it uses less digits than its factorization.

87732506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43866255.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 87732506 is about 9366.5631904130. The cubic root of 87732506 is about 444.3448778676.

The spelling of 87732506 in words is "eighty-seven million, seven hundred thirty-two thousand, five hundred six".