87693564 has 48 divisors (see below), whose sum is σ = 241920000. Its totient is φ = 24190656.

The previous prime is 87693559. The next prime is 87693577. The reversal of 87693564 is 46539678.

It is a super-2 number, since 2×87693564² = 15380322334044192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15564 + ... + 20435.

It is an arithmetic number, because the mean of its divisors is an integer number (5040000).

Almost surely, 2^87693564 is an apocalyptic number.

87693564 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

87693564 is an abundant number, since it is smaller than the sum of its proper divisors (154226436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87693564 is a wasteful number, since it uses less digits than its factorization.

87693564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36042 (or 36040 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 87693564 is about 9364.4841822708. The cubic root of 87693564 is about 444.2791240596.

The spelling of 87693564 in words is "eighty-seven million, six hundred ninety-three thousand, five hundred sixty-four".