64573013 has 4 divisors (see below), whose sum is σ = 64830528. Its totient is φ = 64315500.

The previous prime is 64572961. The next prime is 64573043. The reversal of 64573013 is 31037546.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64573013 - 2⁸ = 64572757 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 (64573043) 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, 128381 + ... + 128882.

It is an arithmetic number, because the mean of its divisors is an integer number (16207632).

Almost surely, 2^64573013 is an apocalyptic number.

It is an amenable number.

64573013 is a deficient number, since it is larger than the sum of its proper divisors (257515).

64573013 is a wasteful number, since it uses less digits than its factorization.

64573013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257514.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 64573013 is about 8035.7335072786. The cubic root of 64573013 is about 401.1902319404.

The spelling of 64573013 in words is "sixty-four million, five hundred seventy-three thousand, thirteen".