87632579 has 4 divisors (see below), whose sum is σ = 92244840. Its totient is φ = 83020320.

The previous prime is 87632563. The next prime is 87632651. The reversal of 87632579 is 97523678.

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

It is a cyclic number.

It is not a de Polignac number, because 87632579 - 2⁴ = 87632563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87632509) 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 3 ways as a sum of consecutive naturals, for example, 2306102 + ... + 2306139.

It is an arithmetic number, because the mean of its divisors is an integer number (23061210).

Almost surely, 2^87632579 is an apocalyptic number.

87632579 is a deficient number, since it is larger than the sum of its proper divisors (4612261).

87632579 is a wasteful number, since it uses less digits than its factorization.

87632579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4612260.

The product of its digits is 635040, while the sum is 47.

The square root of 87632579 is about 9361.2274302038. The cubic root of 87632579 is about 444.1761113855.

The spelling of 87632579 in words is "eighty-seven million, six hundred thirty-two thousand, five hundred seventy-nine".