64319379 has 4 divisors (see below), whose sum is σ = 85759176. Its totient is φ = 42879584.

The previous prime is 64319371. The next prime is 64319383. The reversal of 64319379 is 97391346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64319379 - 2³ = 64319371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64319379.

It is not an unprimeable number, because it can be changed into a prime (64319371) 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 in 3 ways as a sum of consecutive naturals, for example, 10719894 + ... + 10719899.

It is an arithmetic number, because the mean of its divisors is an integer number (21439794).

Almost surely, 2^64319379 is an apocalyptic number.

64319379 is a deficient number, since it is larger than the sum of its proper divisors (21439797).

64319379 is a wasteful number, since it uses less digits than its factorization.

64319379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21439796.

The product of its digits is 122472, while the sum is 42.

The square root of 64319379 is about 8019.9363463808. The cubic root of 64319379 is about 400.6642691722.

The spelling of 64319379 in words is "sixty-four million, three hundred nineteen thousand, three hundred seventy-nine".