64312057 has 2 divisors, whose sum is σ = 64312058. Its totient is φ = 64312056.

The previous prime is 64312043. The next prime is 64312063. The reversal of 64312057 is 75021346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61716736 + 2595321 = 7856^2 + 1611^2 .

It is a cyclic number.

It is not a de Polignac number, because 64312057 - 2¹¹ = 64310009 is a prime.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (64312007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32156028 + 32156029.

It is an arithmetic number, because the mean of its divisors is an integer number (32156029).

Almost surely, 2^64312057 is an apocalyptic number.

It is an amenable number.

64312057 is a deficient number, since it is larger than the sum of its proper divisors (1).

64312057 is an equidigital number, since it uses as much as digits as its factorization.

64312057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 64312057 is about 8019.4798459750. The cubic root of 64312057 is about 400.6490649670.

The spelling of 64312057 in words is "sixty-four million, three hundred twelve thousand, fifty-seven".