87668577 has 12 divisors (see below), whose sum is σ = 130055380. Its totient is φ = 56865888.

The previous prime is 87668573. The next prime is 87668579. The reversal of 87668577 is 77586678.

87668577 is a `hidden beast` number, since 8 + 7 + 6 + 68 + 577 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 84713616 + 2954961 = 9204^2 + 1719^2 .

It is not a de Polignac number, because 87668577 - 2² = 87668573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87668573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131302 + ... + 131967.

Almost surely, 2^87668577 is an apocalyptic number.

It is an amenable number.

87668577 is a deficient number, since it is larger than the sum of its proper divisors (42386803).

87668577 is a wasteful number, since it uses less digits than its factorization.

87668577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263312 (or 263309 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 54.

The square root of 87668577 is about 9363.1499507377. The cubic root of 87668577 is about 444.2369231024.

The spelling of 87668577 in words is "eighty-seven million, six hundred sixty-eight thousand, five hundred seventy-seven".