64782313 has 2 divisors, whose sum is σ = 64782314. Its totient is φ = 64782312.

The previous prime is 64782287. The next prime is 64782353. The reversal of 64782313 is 31328746.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63808144 + 974169 = 7988^2 + 987^2 .

It is a cyclic number.

It is not a de Polignac number, because 64782313 - 2¹³ = 64774121 is a prime.

It is not a weakly prime, because it can be changed into another prime (64782353) 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, 32391156 + 32391157.

It is an arithmetic number, because the mean of its divisors is an integer number (32391157).

Almost surely, 2^64782313 is an apocalyptic number.

It is an amenable number.

64782313 is a deficient number, since it is larger than the sum of its proper divisors (1).

64782313 is an equidigital number, since it uses as much as digits as its factorization.

64782313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 64782313 is about 8048.7460514045. The cubic root of 64782313 is about 401.6232227098.

The spelling of 64782313 in words is "sixty-four million, seven hundred eighty-two thousand, three hundred thirteen".