64957297 has 2 divisors, whose sum is σ = 64957298. Its totient is φ = 64957296.

The previous prime is 64957283. The next prime is 64957301. The reversal of 64957297 is 79275946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64625521 + 331776 = 8039^2 + 576^2 .

It is a cyclic number.

It is not a de Polignac number, because 64957297 - 2⁷ = 64957169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64957297.

It is not a weakly prime, because it can be changed into another prime (64957247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32478648 + 32478649.

It is an arithmetic number, because the mean of its divisors is an integer number (32478649).

Almost surely, 2^64957297 is an apocalyptic number.

It is an amenable number.

64957297 is a deficient number, since it is larger than the sum of its proper divisors (1).

64957297 is an equidigital number, since it uses as much as digits as its factorization.

64957297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 49.

The square root of 64957297 is about 8059.6089855526. The cubic root of 64957297 is about 401.9845067996.

The spelling of 64957297 in words is "sixty-four million, nine hundred fifty-seven thousand, two hundred ninety-seven".