656755 has 8 divisors (see below), whose sum is σ = 859824. Its totient is φ = 477600.

The previous prime is 656753. The next prime is 656771. The reversal of 656755 is 557656.

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

It is not a de Polignac number, because 656755 - 2¹ = 656753 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 656755.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656753) 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, 5916 + ... + 6025.

It is an arithmetic number, because the mean of its divisors is an integer number (107478).

2⁶⁵⁶⁷⁵⁵ is an apocalyptic number.

656755 is a deficient number, since it is larger than the sum of its proper divisors (203069).

656755 is a wasteful number, since it uses less digits than its factorization.

656755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11957.

The product of its digits is 31500, while the sum is 34.

The square root of 656755 is about 810.4042201272. The cubic root of 656755 is about 86.9229511174.

Subtracting from 656755 its reverse (557656), we obtain a palindrome (99099).

The spelling of 656755 in words is "six hundred fifty-six thousand, seven hundred fifty-five".