6364444636 has 18 divisors (see below), whose sum is σ = 12242352080. Its totient is φ = 2892929160.

The previous prime is 6364444601. The next prime is 6364444673.

It is a happy number.

6364444636 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6574356 + ... + 6575323.

Almost surely, 2^6364444636 is an apocalyptic number.

It is an amenable number.

6364444636 is a deficient number, since it is larger than the sum of its proper divisors (5877907444).

6364444636 is a wasteful number, since it uses less digits than its factorization.

6364444636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13149705 (or 13149692 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 46.

The square root of 6364444636 is about 79777.4694760369. The cubic root of 6364444636 is about 1853.1909512992.

The spelling of 6364444636 in words is "six billion, three hundred sixty-four million, four hundred forty-four thousand, six hundred thirty-six".