64318679 has 4 divisors (see below), whose sum is σ = 64337160. Its totient is φ = 64300200.

The previous prime is 64318651. The next prime is 64318693. The reversal of 64318679 is 97681346.

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 64318679 - 2¹² = 64314583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64318699) 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, 2264 + ... + 11565.

It is an arithmetic number, because the mean of its divisors is an integer number (16084290).

Almost surely, 2^64318679 is an apocalyptic number.

64318679 is a deficient number, since it is larger than the sum of its proper divisors (18481).

64318679 is a wasteful number, since it uses less digits than its factorization.

64318679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18480.

The product of its digits is 217728, while the sum is 44.

The square root of 64318679 is about 8019.8927050179. The cubic root of 64318679 is about 400.6628156652.

The spelling of 64318679 in words is "sixty-four million, three hundred eighteen thousand, six hundred seventy-nine".