87966140 has 24 divisors (see below), whose sum is σ = 188661312. Its totient is φ = 34437440.

The previous prime is 87966103. The next prime is 87966163. The reversal of 87966140 is 4166978.

It is a congruent number.

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, 45851 + ... + 47730.

It is an arithmetic number, because the mean of its divisors is an integer number (7860888).

Almost surely, 2^87966140 is an apocalyptic number.

It is an amenable number.

87966140 is an abundant number, since it is smaller than the sum of its proper divisors (100695172).

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

87966140 is a wasteful number, since it uses less digits than its factorization.

87966140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93637 (or 93635 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 87966140 is about 9379.0266019454. The cubic root of 87966140 is about 444.7389623364.

The spelling of 87966140 in words is "eighty-seven million, nine hundred sixty-six thousand, one hundred forty".