650651957 has 2 divisors, whose sum is σ = 650651958. Its totient is φ = 650651956.

The previous prime is 650651929. The next prime is 650651977. The reversal of 650651957 is 759156056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 585591601 + 65060356 = 24199^2 + 8066^2 .

It is a cyclic number.

It is not a de Polignac number, because 650651957 - 2⁶ = 650651893 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 (650651977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325325978 + 325325979.

It is an arithmetic number, because the mean of its divisors is an integer number (325325979).

Almost surely, 2^650651957 is an apocalyptic number.

It is an amenable number.

650651957 is a deficient number, since it is larger than the sum of its proper divisors (1).

650651957 is an equidigital number, since it uses as much as digits as its factorization.

650651957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 283500, while the sum is 44.

The square root of 650651957 is about 25507.8802921764. The cubic root of 650651957 is about 866.5286242827.

The spelling of 650651957 in words is "six hundred fifty million, six hundred fifty-one thousand, nine hundred fifty-seven".