64972253 has 2 divisors, whose sum is σ = 64972254. Its totient is φ = 64972252.

The previous prime is 64972247. The next prime is 64972273. The reversal of 64972253 is 35227946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64288324 + 683929 = 8018^2 + 827^2 .

It is a cyclic number.

It is not a de Polignac number, because 64972253 - 2⁸ = 64971997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64972213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32486126 + 32486127.

It is an arithmetic number, because the mean of its divisors is an integer number (32486127).

Almost surely, 2^64972253 is an apocalyptic number.

It is an amenable number.

64972253 is a deficient number, since it is larger than the sum of its proper divisors (1).

64972253 is an equidigital number, since it uses as much as digits as its factorization.

64972253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 64972253 is about 8060.5367687270. The cubic root of 64972253 is about 402.0153558815.

The spelling of 64972253 in words is "sixty-four million, nine hundred seventy-two thousand, two hundred fifty-three".