64265213 has 2 divisors, whose sum is σ = 64265214. Its totient is φ = 64265212.

The previous prime is 64265207. The next prime is 64265237. The reversal of 64265213 is 31256246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42484324 + 21780889 = 6518^2 + 4667^2 .

It is a cyclic number.

It is not a de Polignac number, because 64265213 - 2¹² = 64261117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64265293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32132606 + 32132607.

It is an arithmetic number, because the mean of its divisors is an integer number (32132607).

Almost surely, 2^64265213 is an apocalyptic number.

It is an amenable number.

64265213 is a deficient number, since it is larger than the sum of its proper divisors (1).

64265213 is an equidigital number, since it uses as much as digits as its factorization.

64265213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 64265213 is about 8016.5586756413. The cubic root of 64265213 is about 400.5517656201.

The spelling of 64265213 in words is "sixty-four million, two hundred sixty-five thousand, two hundred thirteen".