87920605 has 32 divisors (see below), whose sum is σ = 116847360. Its totient is φ = 63275520.

The previous prime is 87920593. The next prime is 87920611. The reversal of 87920605 is 50602978.

It is not a de Polignac number, because 87920605 - 2⁷ = 87920477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136414 + ... + 137056.

It is an arithmetic number, because the mean of its divisors is an integer number (3651480).

Almost surely, 2^87920605 is an apocalyptic number.

It is an amenable number.

87920605 is a deficient number, since it is larger than the sum of its proper divisors (28926755).

87920605 is a wasteful number, since it uses less digits than its factorization.

87920605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 87920605 is about 9376.5987970052. The cubic root of 87920605 is about 444.6622105167.

The spelling of 87920605 in words is "eighty-seven million, nine hundred twenty thousand, six hundred five".