87023624 has 8 divisors (see below), whose sum is σ = 163169310. Its totient is φ = 43511808.

The previous prime is 87023623. The next prime is 87023639. The reversal of 87023624 is 42632078.

It can be written as a sum of positive squares in only one way, i.e., 45832900 + 41190724 = 6770^2 + 6418^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×87023624² = 15146222268186752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87023621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5438969 + ... + 5438984.

Almost surely, 2^87023624 is an apocalyptic number.

It is an amenable number.

87023624 is a deficient number, since it is larger than the sum of its proper divisors (76145686).

87023624 is a wasteful number, since it uses less digits than its factorization.

87023624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10877959 (or 10877955 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 87023624 is about 9328.6453464584. The cubic root of 87023624 is about 443.1448654627.

The spelling of 87023624 in words is "eighty-seven million, twenty-three thousand, six hundred twenty-four".