663257113 has 4 divisors (see below), whose sum is σ = 666962640. Its totient is φ = 659551588.

The previous prime is 663257083. The next prime is 663257137. The reversal of 663257113 is 311752366.

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 663257113 - 2²⁵ = 629702681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663257213) 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, 1852495 + ... + 1852852.

It is an arithmetic number, because the mean of its divisors is an integer number (166740660).

Almost surely, 2^663257113 is an apocalyptic number.

It is an amenable number.

663257113 is a deficient number, since it is larger than the sum of its proper divisors (3705527).

663257113 is a wasteful number, since it uses less digits than its factorization.

663257113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3705526.

The product of its digits is 22680, while the sum is 34.

The square root of 663257113 is about 25753.7786159624. The cubic root of 663257113 is about 872.0886589041.

The spelling of 663257113 in words is "six hundred sixty-three million, two hundred fifty-seven thousand, one hundred thirteen".