656959157 has 2 divisors, whose sum is σ = 656959158. Its totient is φ = 656959156.

The previous prime is 656959153. The next prime is 656959183. The reversal of 656959157 is 751959656.

656959157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600544036 + 56415121 = 24506^2 + 7511^2 .

It is a cyclic number.

It is not a de Polignac number, because 656959157 - 2² = 656959153 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 656959099 and 656959108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656959151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328479578 + 328479579.

It is an arithmetic number, because the mean of its divisors is an integer number (328479579).

Almost surely, 2^656959157 is an apocalyptic number.

It is an amenable number.

656959157 is a deficient number, since it is larger than the sum of its proper divisors (1).

656959157 is an equidigital number, since it uses as much as digits as its factorization.

656959157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2551500, while the sum is 53.

The square root of 656959157 is about 25631.2145049742. The cubic root of 656959157 is about 869.3195705845.

The spelling of 656959157 in words is "six hundred fifty-six million, nine hundred fifty-nine thousand, one hundred fifty-seven".