65256913 has 2 divisors, whose sum is σ = 65256914. Its totient is φ = 65256912.

The previous prime is 65256907. The next prime is 65256941. The reversal of 65256913 is 31965256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60341824 + 4915089 = 7768^2 + 2217^2 .

It is a cyclic number.

It is not a de Polignac number, because 65256913 - 2¹³ = 65248721 is a prime.

It is not a weakly prime, because it can be changed into another prime (65256943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32628456 + 32628457.

It is an arithmetic number, because the mean of its divisors is an integer number (32628457).

Almost surely, 2^65256913 is an apocalyptic number.

It is an amenable number.

65256913 is a deficient number, since it is larger than the sum of its proper divisors (1).

65256913 is an equidigital number, since it uses as much as digits as its factorization.

65256913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 37.

The square root of 65256913 is about 8078.1751033262. The cubic root of 65256913 is about 402.6016111142.

The spelling of 65256913 in words is "sixty-five million, two hundred fifty-six thousand, nine hundred thirteen".