656655 has 8 divisors (see below), whose sum is σ = 1050672. Its totient is φ = 350208.

The previous prime is 656651. The next prime is 656657. The reversal of 656655 is 556656.

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

It is not a de Polignac number, because 656655 - 2² = 656651 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656651) 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, 21874 + ... + 21903.

It is an arithmetic number, because the mean of its divisors is an integer number (131334).

2⁶⁵⁶⁶⁵⁵ is an apocalyptic number.

656655 is a deficient number, since it is larger than the sum of its proper divisors (394017).

656655 is a wasteful number, since it uses less digits than its factorization.

656655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43785.

The product of its digits is 27000, while the sum is 33.

The square root of 656655 is about 810.3425201728. The cubic root of 656655 is about 86.9185391544.

Subtracting from 656655 its reverse (556656), we obtain a palindrome (99999).

The spelling of 656655 in words is "six hundred fifty-six thousand, six hundred fifty-five".