64975213 has 2 divisors, whose sum is σ = 64975214. Its totient is φ = 64975212.

The previous prime is 64975177. The next prime is 64975217. The reversal of 64975213 is 31257946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33143049 + 31832164 = 5757^2 + 5642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64975213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64975217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32487606 + 32487607.

It is an arithmetic number, because the mean of its divisors is an integer number (32487607).

Almost surely, 2^64975213 is an apocalyptic number.

It is an amenable number.

64975213 is a deficient number, since it is larger than the sum of its proper divisors (1).

64975213 is an equidigital number, since it uses as much as digits as its factorization.

64975213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 64975213 is about 8060.7203772368. The cubic root of 64975213 is about 402.0214607818.

The spelling of 64975213 in words is "sixty-four million, nine hundred seventy-five thousand, two hundred thirteen".