64371313 has 2 divisors, whose sum is σ = 64371314. Its totient is φ = 64371312.

The previous prime is 64371311. The next prime is 64371337. The reversal of 64371313 is 31317346.

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., 60730849 + 3640464 = 7793^2 + 1908^2 .

It is a cyclic number.

It is not a de Polignac number, because 64371313 - 2¹ = 64371311 is a prime.

Together with 64371311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (64371311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32185656 + 32185657.

It is an arithmetic number, because the mean of its divisors is an integer number (32185657).

Almost surely, 2^64371313 is an apocalyptic number.

It is an amenable number.

64371313 is a deficient number, since it is larger than the sum of its proper divisors (1).

64371313 is an equidigital number, since it uses as much as digits as its factorization.

64371313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 28.

The square root of 64371313 is about 8023.1734993081. The cubic root of 64371313 is about 400.7720775319.

Adding to 64371313 its reverse (31317346), we get a palindrome (95688659).

It can be divided in two parts, 6437 and 1313, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 64371313 in words is "sixty-four million, three hundred seventy-one thousand, three hundred thirteen".