64464319 has 2 divisors, whose sum is σ = 64464320. Its totient is φ = 64464318.

The previous prime is 64464317. The next prime is 64464347. The reversal of 64464319 is 91346446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64464319 - 2¹ = 64464317 is a prime.

It is a super-2 number, since 2×64464319² = 8311296848267522, which contains 22 as substring.

Together with 64464317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64464317) 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, 32232159 + 32232160.

It is an arithmetic number, because the mean of its divisors is an integer number (32232160).

Almost surely, 2^64464319 is an apocalyptic number.

64464319 is a deficient number, since it is larger than the sum of its proper divisors (1).

64464319 is an equidigital number, since it uses as much as digits as its factorization.

64464319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 37.

The square root of 64464319 is about 8028.9674927727. The cubic root of 64464319 is about 400.9650013090.

The spelling of 64464319 in words is "sixty-four million, four hundred sixty-four thousand, three hundred nineteen".