87656371 has 4 divisors (see below), whose sum is σ = 95625144. Its totient is φ = 79687600.

The previous prime is 87656353. The next prime is 87656377. The reversal of 87656371 is 17365678.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87656371 - 2¹⁵ = 87623603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87656377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3984370 + ... + 3984391.

It is an arithmetic number, because the mean of its divisors is an integer number (23906286).

Almost surely, 2^87656371 is an apocalyptic number.

87656371 is a deficient number, since it is larger than the sum of its proper divisors (7968773).

87656371 is a wasteful number, since it uses less digits than its factorization.

87656371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7968772.

The product of its digits is 211680, while the sum is 43.

The square root of 87656371 is about 9362.4981174898. The cubic root of 87656371 is about 444.2163052720.

The spelling of 87656371 in words is "eighty-seven million, six hundred fifty-six thousand, three hundred seventy-one".