87655388 has 12 divisors (see below), whose sum is σ = 155121120. Its totient is φ = 43335072.

The previous prime is 87655361. The next prime is 87655391. The reversal of 87655388 is 88355678.

It is a congruent number.

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, 122756 + ... + 123467.

It is an arithmetic number, because the mean of its divisors is an integer number (12926760).

Almost surely, 2^87655388 is an apocalyptic number.

It is an amenable number.

87655388 is a deficient number, since it is larger than the sum of its proper divisors (67465732).

87655388 is a wasteful number, since it uses less digits than its factorization.

87655388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246316 (or 246314 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 50.

The square root of 87655388 is about 9362.4456206698. The cubic root of 87655388 is about 444.2146447490.

The spelling of 87655388 in words is "eighty-seven million, six hundred fifty-five thousand, three hundred eighty-eight".