656951 has 2 divisors, whose sum is σ = 656952. Its totient is φ = 656950.

The previous prime is 656939. The next prime is 656959. The reversal of 656951 is 159656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 656951 - 2¹⁰ = 655927 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328475 + 328476.

It is an arithmetic number, because the mean of its divisors is an integer number (328476).

2⁶⁵⁶⁹⁵¹ is an apocalyptic number.

656951 is a deficient number, since it is larger than the sum of its proper divisors (1).

656951 is an equidigital number, since it uses as much as digits as its factorization.

656951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 32.

The square root of 656951 is about 810.5251384134. The cubic root of 656951 is about 86.9315972660.

The spelling of 656951 in words is "six hundred fifty-six thousand, nine hundred fifty-one".