87659081 has 4 divisors (see below), whose sum is σ = 87859200. Its totient is φ = 87458964.

The previous prime is 87659063. The next prime is 87659087. The reversal of 87659081 is 18095678.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87659081 - 2⁶ = 87659017 is a prime.

It is a super-2 number, since 2×87659081² = 15368228963529122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87659087) 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, 99401 + ... + 100278.

It is an arithmetic number, because the mean of its divisors is an integer number (21964800).

Almost surely, 2^87659081 is an apocalyptic number.

It is an amenable number.

87659081 is a deficient number, since it is larger than the sum of its proper divisors (200119).

87659081 is a wasteful number, since it uses less digits than its factorization.

87659081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200118.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 87659081 is about 9362.6428427021. The cubic root of 87659081 is about 444.2208830483.

The spelling of 87659081 in words is "eighty-seven million, six hundred fifty-nine thousand, eighty-one".