64356377 has 2 divisors, whose sum is σ = 64356378. Its totient is φ = 64356376.

The previous prime is 64356371. The next prime is 64356449. The reversal of 64356377 is 77365346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48706441 + 15649936 = 6979^2 + 3956^2 .

It is a cyclic number.

It is not a de Polignac number, because 64356377 - 2⁸ = 64356121 is a prime.

It is a super-2 number, since 2×64356377² = 8283486521132258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64356371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32178188 + 32178189.

It is an arithmetic number, because the mean of its divisors is an integer number (32178189).

Almost surely, 2^64356377 is an apocalyptic number.

It is an amenable number.

64356377 is a deficient number, since it is larger than the sum of its proper divisors (1).

64356377 is an equidigital number, since it uses as much as digits as its factorization.

64356377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 41.

The square root of 64356377 is about 8022.2426415560. The cubic root of 64356377 is about 400.7410782430.

The spelling of 64356377 in words is "sixty-four million, three hundred fifty-six thousand, three hundred seventy-seven".