87632578 has 8 divisors (see below), whose sum is σ = 143398800. Its totient is φ = 39832980.

The previous prime is 87632563. The next prime is 87632651. The reversal of 87632578 is 87523678.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1991628 + ... + 1991671.

It is an arithmetic number, because the mean of its divisors is an integer number (17924850).

Almost surely, 2^87632578 is an apocalyptic number.

87632578 is a deficient number, since it is larger than the sum of its proper divisors (55766222).

87632578 is a wasteful number, since it uses less digits than its factorization.

87632578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983312.

The product of its digits is 564480, while the sum is 46.

The square root of 87632578 is about 9361.2273767920. The cubic root of 87632578 is about 444.1761096959.

Subtracting from 87632578 its reverse (87523678), we obtain a square (108900 = 330²).

The spelling of 87632578 in words is "eighty-seven million, six hundred thirty-two thousand, five hundred seventy-eight".