64000591 has 4 divisors (see below), whose sum is σ = 64016872. Its totient is φ = 63984312.

The previous prime is 64000583. The next prime is 64000603. The reversal of 64000591 is 19500046.

64000591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 64000591 - 2³ = 64000583 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 (64000561) 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 3 ways as a sum of consecutive naturals, for example, 1816 + ... + 11458.

It is an arithmetic number, because the mean of its divisors is an integer number (16004218).

Almost surely, 2^64000591 is an apocalyptic number.

64000591 is a deficient number, since it is larger than the sum of its proper divisors (16281).

64000591 is an equidigital number, since it uses as much as digits as its factorization.

64000591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16280.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 64000591 is about 8000.0369374147. The cubic root of 64000591 is about 400.0012312462.

The spelling of 64000591 in words is "sixty-four million, five hundred ninety-one", and thus it is an aban number.