64440593 has 8 divisors (see below), whose sum is σ = 73726080. Its totient is φ = 55175040.

The previous prime is 64440559. The next prime is 64440601. The reversal of 64440593 is 39504446.

64440593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64440593 - 2⁶ = 64440529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64440193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2753 + ... + 11681.

It is an arithmetic number, because the mean of its divisors is an integer number (9215760).

Almost surely, 2^64440593 is an apocalyptic number.

It is an amenable number.

64440593 is a deficient number, since it is larger than the sum of its proper divisors (9285487).

64440593 is a wasteful number, since it uses less digits than its factorization.

64440593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9967.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 64440593 is about 8027.4898318217. The cubic root of 64440593 is about 400.9158037419.

The spelling of 64440593 in words is "sixty-four million, four hundred forty thousand, five hundred ninety-three".