64722589 has 4 divisors (see below), whose sum is σ = 64829824. Its totient is φ = 64615356.

The previous prime is 64722563. The next prime is 64722599. The reversal of 64722589 is 98522746.

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 64722589 - 2⁵ = 64722557 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 (64722599) 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, 52707 + ... + 53920.

It is an arithmetic number, because the mean of its divisors is an integer number (16207456).

Almost surely, 2^64722589 is an apocalyptic number.

It is an amenable number.

64722589 is a deficient number, since it is larger than the sum of its proper divisors (107235).

64722589 is a wasteful number, since it uses less digits than its factorization.

64722589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107234.

The product of its digits is 241920, while the sum is 43.

The square root of 64722589 is about 8045.0350527515. The cubic root of 64722589 is about 401.4997634957.

The spelling of 64722589 in words is "sixty-four million, seven hundred twenty-two thousand, five hundred eighty-nine".