664244053 has 8 divisors (see below), whose sum is σ = 728820576. Its totient is φ = 600366000.

The previous prime is 664244051. The next prime is 664244057. The reversal of 664244053 is 350442466.

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 664244053 - 2¹ = 664244051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664244051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172623 + ... + 176428.

It is an arithmetic number, because the mean of its divisors is an integer number (91102572).

Almost surely, 2^664244053 is an apocalyptic number.

It is an amenable number.

664244053 is a deficient number, since it is larger than the sum of its proper divisors (64576523).

664244053 is a wasteful number, since it uses less digits than its factorization.

664244053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349235.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 664244053 is about 25772.9325649993. The cubic root of 664244053 is about 872.5210063825.

The spelling of 664244053 in words is "six hundred sixty-four million, two hundred forty-four thousand, fifty-three".