64396253 has 2 divisors, whose sum is σ = 64396254. Its totient is φ = 64396252.

The previous prime is 64396237. The next prime is 64396271. The reversal of 64396253 is 35269346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63712324 + 683929 = 7982^2 + 827^2 .

It is a cyclic number.

It is not a de Polignac number, because 64396253 - 2⁴ = 64396237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64396753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32198126 + 32198127.

It is an arithmetic number, because the mean of its divisors is an integer number (32198127).

Almost surely, 2^64396253 is an apocalyptic number.

It is an amenable number.

64396253 is a deficient number, since it is larger than the sum of its proper divisors (1).

64396253 is an equidigital number, since it uses as much as digits as its factorization.

64396253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 38.

The square root of 64396253 is about 8024.7275966228. The cubic root of 64396253 is about 400.8238291822.

The spelling of 64396253 in words is "sixty-four million, three hundred ninety-six thousand, two hundred fifty-three".