64579279 has 4 divisors (see below), whose sum is σ = 64619776. Its totient is φ = 64538784.

The previous prime is 64579267. The next prime is 64579283. The reversal of 64579279 is 97297546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97297546 = 2 ⋅48648773.

It is a cyclic number.

It is not a de Polignac number, because 64579279 - 2⁵ = 64579247 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 (64579219) 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, 17754 + ... + 21079.

It is an arithmetic number, because the mean of its divisors is an integer number (16154944).

Almost surely, 2^64579279 is an apocalyptic number.

64579279 is a deficient number, since it is larger than the sum of its proper divisors (40497).

64579279 is a wasteful number, since it uses less digits than its factorization.

64579279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40496.

The product of its digits is 952560, while the sum is 49.

The square root of 64579279 is about 8036.1233813326. The cubic root of 64579279 is about 401.2032083452.

The spelling of 64579279 in words is "sixty-four million, five hundred seventy-nine thousand, two hundred seventy-nine".