64368737 has 2 divisors, whose sum is σ = 64368738. Its totient is φ = 64368736.

The previous prime is 64368701. The next prime is 64368757. The reversal of 64368737 is 73786346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63856081 + 512656 = 7991^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 64368737 - 2⁶ = 64368673 is a prime.

It is not a weakly prime, because it can be changed into another prime (64368757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32184368 + 32184369.

It is an arithmetic number, because the mean of its divisors is an integer number (32184369).

Almost surely, 2^64368737 is an apocalyptic number.

It is an amenable number.

64368737 is a deficient number, since it is larger than the sum of its proper divisors (1).

64368737 is an equidigital number, since it uses as much as digits as its factorization.

64368737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 44.

The square root of 64368737 is about 8023.0129627217. The cubic root of 64368737 is about 400.7667314515.

The spelling of 64368737 in words is "sixty-four million, three hundred sixty-eight thousand, seven hundred thirty-seven".