87655677 has 8 divisors (see below), whose sum is σ = 118520640. Its totient is φ = 57613920.

The previous prime is 87655669. The next prime is 87655679. The reversal of 87655677 is 77655678.

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

It is not a de Polignac number, because 87655677 - 2³ = 87655669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87655679) 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, 205552 + ... + 205977.

It is an arithmetic number, because the mean of its divisors is an integer number (14815080).

Almost surely, 2^87655677 is an apocalyptic number.

It is an amenable number.

87655677 is a deficient number, since it is larger than the sum of its proper divisors (30864963).

87655677 is a wasteful number, since it uses less digits than its factorization.

87655677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411603.

The product of its digits is 2469600, while the sum is 51.

The square root of 87655677 is about 9362.4610546587. The cubic root of 87655677 is about 444.2151329407.

Subtracting from 87655677 its reverse (77655678), we obtain a palindrome (9999999).

The spelling of 87655677 in words is "eighty-seven million, six hundred fifty-five thousand, six hundred seventy-seven".