664368113 has 4 divisors (see below), whose sum is σ = 665881920. Its totient is φ = 662854308.

The previous prime is 664368073. The next prime is 664368121. The reversal of 664368113 is 311863466.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 664368113 - 2¹⁴ = 664351729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664368013) 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, 756245 + ... + 757122.

It is an arithmetic number, because the mean of its divisors is an integer number (166470480).

Almost surely, 2^664368113 is an apocalyptic number.

It is an amenable number.

664368113 is a deficient number, since it is larger than the sum of its proper divisors (1513807).

664368113 is a wasteful number, since it uses less digits than its factorization.

664368113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513806.

The product of its digits is 62208, while the sum is 38.

The square root of 664368113 is about 25775.3392412205. The cubic root of 664368113 is about 872.5753228733.

The spelling of 664368113 in words is "six hundred sixty-four million, three hundred sixty-eight thousand, one hundred thirteen".