87920177 has 8 divisors (see below), whose sum is σ = 90561600. Its totient is φ = 85292784.

The previous prime is 87920167. The next prime is 87920227. The reversal of 87920177 is 77102978.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87920177 - 2⁸ = 87919921 is a prime.

It is a super-2 number, since 2×87920177² = 15459915047422658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87920117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9974 + ... + 16592.

It is an arithmetic number, because the mean of its divisors is an integer number (11320200).

Almost surely, 2^87920177 is an apocalyptic number.

It is an amenable number.

87920177 is a deficient number, since it is larger than the sum of its proper divisors (2641423).

87920177 is a wasteful number, since it uses less digits than its factorization.

87920177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7015.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 87920177 is about 9376.5759742029. The cubic root of 87920177 is about 444.6614889728.

The spelling of 87920177 in words is "eighty-seven million, nine hundred twenty thousand, one hundred seventy-seven".