664564053 has 16 divisors (see below), whose sum is σ = 895634496. Its totient is φ = 438280320.

The previous prime is 664564027. The next prime is 664564057. The reversal of 664564053 is 350465466.

It is not a de Polignac number, because 664564053 - 2²⁴ = 647786837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664564057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378225 + ... + 379977.

It is an arithmetic number, because the mean of its divisors is an integer number (55977156).

Almost surely, 2^664564053 is an apocalyptic number.

It is an amenable number.

664564053 is a deficient number, since it is larger than the sum of its proper divisors (231070443).

664564053 is a wasteful number, since it uses less digits than its factorization.

664564053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044.

The product of its (nonzero) digits is 259200, while the sum is 39.

The square root of 664564053 is about 25779.1398809192. The cubic root of 664564053 is about 872.6610964076.

The spelling of 664564053 in words is "six hundred sixty-four million, five hundred sixty-four thousand, fifty-three".