87655 has 8 divisors (see below), whose sum is σ = 107712. Its totient is φ = 68448.

The previous prime is 87649. The next prime is 87671. The reversal of 87655 is 55678.

87655 = 18² + 19² + ... + 64².

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 87655 - 2⁵ = 87623 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49 + ... + 421.

It is an arithmetic number, because the mean of its divisors is an integer number (13464).

2⁸⁷⁶⁵⁵ is an apocalyptic number.

87655 is a deficient number, since it is larger than the sum of its proper divisors (20057).

87655 is a wasteful number, since it uses less digits than its factorization.

87655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425.

The product of its digits is 8400, while the sum is 31.

The square root of 87655 is about 296.0658710490. The cubic root of 87655 is about 44.4213989320.

The spelling of 87655 in words is "eighty-seven thousand, six hundred fifty-five".