64413313 has 2 divisors, whose sum is σ = 64413314. Its totient is φ = 64413312.

The previous prime is 64413311. The next prime is 64413341. The reversal of 64413313 is 31331446.

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., 60964864 + 3448449 = 7808^2 + 1857^2 .

It is a cyclic number.

It is not a de Polignac number, because 64413313 - 2¹ = 64413311 is a prime.

Together with 64413311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64413311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32206656 + 32206657.

It is an arithmetic number, because the mean of its divisors is an integer number (32206657).

Almost surely, 2^64413313 is an apocalyptic number.

It is an amenable number.

64413313 is a deficient number, since it is larger than the sum of its proper divisors (1).

64413313 is an equidigital number, since it uses as much as digits as its factorization.

64413313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 25.

The square root of 64413313 is about 8025.7904906620. The cubic root of 64413313 is about 400.8592217733.

Adding to 64413313 its reverse (31331446), we get a palindrome (95744759).

The spelling of 64413313 in words is "sixty-four million, four hundred thirteen thousand, three hundred thirteen".