87708923 has 4 divisors (see below), whose sum is σ = 87748200. Its totient is φ = 87669648.

The previous prime is 87708917. The next prime is 87708947. The reversal of 87708923 is 32980778.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87708923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87708323) 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, 16073 + ... + 20826.

It is an arithmetic number, because the mean of its divisors is an integer number (21937050).

Almost surely, 2^87708923 is an apocalyptic number.

87708923 is a deficient number, since it is larger than the sum of its proper divisors (39277).

87708923 is a wasteful number, since it uses less digits than its factorization.

87708923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39276.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 87708923 is about 9365.3042128913. The cubic root of 87708923 is about 444.3050601504.

The spelling of 87708923 in words is "eighty-seven million, seven hundred eight thousand, nine hundred twenty-three".