656927 has 4 divisors (see below), whose sum is σ = 666000. Its totient is φ = 647856.

The previous prime is 656923. The next prime is 656939. The reversal of 656927 is 729656.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 656927 - 2² = 656923 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4427 + ... + 4572.

It is an arithmetic number, because the mean of its divisors is an integer number (166500).

2⁶⁵⁶⁹²⁷ is an apocalyptic number.

656927 is a deficient number, since it is larger than the sum of its proper divisors (9073).

656927 is an equidigital number, since it uses as much as digits as its factorization.

656927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9072.

The product of its digits is 22680, while the sum is 35.

The square root of 656927 is about 810.5103330618. The cubic root of 656927 is about 86.9305386463.

The spelling of 656927 in words is "six hundred fifty-six thousand, nine hundred twenty-seven".