64751957 has 2 divisors, whose sum is σ = 64751958. Its totient is φ = 64751956.

The previous prime is 64751917. The next prime is 64751959. The reversal of 64751957 is 75915746.

64751957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62315236 + 2436721 = 7894^2 + 1561^2 .

It is a cyclic number.

It is not a de Polignac number, because 64751957 - 2⁶ = 64751893 is a prime.

Together with 64751959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64751959) 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, 32375978 + 32375979.

It is an arithmetic number, because the mean of its divisors is an integer number (32375979).

Almost surely, 2^64751957 is an apocalyptic number.

It is an amenable number.

64751957 is a deficient number, since it is larger than the sum of its proper divisors (1).

64751957 is an equidigital number, since it uses as much as digits as its factorization.

64751957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 44.

The square root of 64751957 is about 8046.8600708599. The cubic root of 64751957 is about 401.5604814112.

The spelling of 64751957 in words is "sixty-four million, seven hundred fifty-one thousand, nine hundred fifty-seven".