64976479 has 4 divisors (see below), whose sum is σ = 65018376. Its totient is φ = 64934584.

The previous prime is 64976459. The next prime is 64976503. The reversal of 64976479 is 97467946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97467946 = 2 ⋅48733973.

It is a cyclic number.

It is not a de Polignac number, because 64976479 - 2¹³ = 64968287 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 (64976459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18529 + ... + 21754.

It is an arithmetic number, because the mean of its divisors is an integer number (16254594).

Almost surely, 2^64976479 is an apocalyptic number.

64976479 is a deficient number, since it is larger than the sum of its proper divisors (41897).

64976479 is a wasteful number, since it uses less digits than its factorization.

64976479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41896.

The product of its digits is 2286144, while the sum is 52.

The square root of 64976479 is about 8060.7989058157. The cubic root of 64976479 is about 402.0240718076.

The spelling of 64976479 in words is "sixty-four million, nine hundred seventy-six thousand, four hundred seventy-nine".