664384053 has 4 divisors (see below), whose sum is σ = 885845408. Its totient is φ = 442922700.

The previous prime is 664384051. The next prime is 664384081. The reversal of 664384053 is 350483466.

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 not a de Polignac number, because 664384053 - 2¹ = 664384051 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 (664384051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110730673 + ... + 110730678.

It is an arithmetic number, because the mean of its divisors is an integer number (221461352).

Almost surely, 2^664384053 is an apocalyptic number.

It is an amenable number.

664384053 is a deficient number, since it is larger than the sum of its proper divisors (221461355).

664384053 is a wasteful number, since it uses less digits than its factorization.

664384053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221461354.

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 664384053 is about 25775.6484496511. The cubic root of 664384053 is about 872.5823013034.

The spelling of 664384053 in words is "six hundred sixty-four million, three hundred eighty-four thousand, fifty-three".