87555940 has 24 divisors (see below), whose sum is σ = 191862720. Its totient is φ = 33499488.

The previous prime is 87555907. The next prime is 87555973. The reversal of 87555940 is 4955578.

It is an interprime number because it is at equal distance from previous prime (87555907) and next prime (87555973).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94710 + ... + 95629.

It is an arithmetic number, because the mean of its divisors is an integer number (7994280).

Almost surely, 2^87555940 is an apocalyptic number.

It is an amenable number.

87555940 is an abundant number, since it is smaller than the sum of its proper divisors (104306780).

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

87555940 is a wasteful number, since it uses less digits than its factorization.

87555940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190371 (or 190369 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 87555940 is about 9357.1331079557. The cubic root of 87555940 is about 444.0465890024.

The spelling of 87555940 in words is "eighty-seven million, five hundred fifty-five thousand, nine hundred forty".