64390593 has 16 divisors (see below), whose sum is σ = 90003456. Its totient is φ = 40869840.

The previous prime is 64390591. The next prime is 64390607. The reversal of 64390593 is 39509346.

64390593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64390593 - 2¹ = 64390591 is a prime.

It is a super-2 number, since 2×64390593² = 8292296933783298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64390591) 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 15 ways as a sum of consecutive naturals, for example, 13608 + ... + 17718.

It is an arithmetic number, because the mean of its divisors is an integer number (5625216).

Almost surely, 2^64390593 is an apocalyptic number.

It is an amenable number.

64390593 is a deficient number, since it is larger than the sum of its proper divisors (25612863).

64390593 is a wasteful number, since it uses less digits than its factorization.

64390593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4364.

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 64390593 is about 8024.3749289275. The cubic root of 64390593 is about 400.8120855934.

The spelling of 64390593 in words is "sixty-four million, three hundred ninety thousand, five hundred ninety-three".