64573313 has 8 divisors (see below), whose sum is σ = 73854528. Its totient is φ = 55306224.

The previous prime is 64573307. The next prime is 64573321. The reversal of 64573313 is 31337546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64573313 - 2²⁰ = 63524737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64573313.

It is not an unprimeable number, because it can be changed into a prime (64573393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9470 + ... + 14792.

It is an arithmetic number, because the mean of its divisors is an integer number (9231816).

Almost surely, 2^64573313 is an apocalyptic number.

It is an amenable number.

64573313 is a deficient number, since it is larger than the sum of its proper divisors (9281215).

64573313 is a wasteful number, since it uses less digits than its factorization.

64573313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7063.

The product of its digits is 22680, while the sum is 32.

The square root of 64573313 is about 8035.7521738789. The cubic root of 64573313 is about 401.1908532365.

The spelling of 64573313 in words is "sixty-four million, five hundred seventy-three thousand, three hundred thirteen".