87160639 has 4 divisors (see below), whose sum is σ = 90950256. Its totient is φ = 83371024.

The previous prime is 87160597. The next prime is 87160663. The reversal of 87160639 is 93606178.

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 87160639 - 2⁷ = 87160511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87160039) 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, 1894774 + ... + 1894819.

It is an arithmetic number, because the mean of its divisors is an integer number (22737564).

Almost surely, 2^87160639 is an apocalyptic number.

87160639 is a deficient number, since it is larger than the sum of its proper divisors (3789617).

87160639 is a wasteful number, since it uses less digits than its factorization.

87160639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789616.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 87160639 is about 9335.9862360653. The cubic root of 87160639 is about 443.3773144349.

The spelling of 87160639 in words is "eighty-seven million, one hundred sixty thousand, six hundred thirty-nine".