64572407 has 4 divisors (see below), whose sum is σ = 65946336. Its totient is φ = 63198480.

The previous prime is 64572401. The next prime is 64572419. The reversal of 64572407 is 70427546.

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 64572407 - 2¹⁰ = 64571383 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 (64572401) 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, 686894 + ... + 686987.

It is an arithmetic number, because the mean of its divisors is an integer number (16486584).

Almost surely, 2^64572407 is an apocalyptic number.

64572407 is a deficient number, since it is larger than the sum of its proper divisors (1373929).

64572407 is a wasteful number, since it uses less digits than its factorization.

64572407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373928.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 64572407 is about 8035.6958006137. The cubic root of 64572407 is about 401.1889769164.

The spelling of 64572407 in words is "sixty-four million, five hundred seventy-two thousand, four hundred seven".