6368644 has 24 divisors (see below), whose sum is σ = 11610368. Its totient is φ = 3054240.

The previous prime is 6368627. The next prime is 6368647. The reversal of 6368644 is 4468636.

It is not an unprimeable number, because it can be changed into a prime (6368647) 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, 10189 + ... + 10795.

Almost surely, 2^6368644 is an apocalyptic number.

It is an amenable number.

6368644 is a deficient number, since it is larger than the sum of its proper divisors (5241724).

6368644 is a wasteful number, since it uses less digits than its factorization.

6368644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715 (or 713 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 6368644 is about 2523.6172451463. The cubic root of 6368644 is about 185.3598450190.

The spelling of 6368644 in words is "six million, three hundred sixty-eight thousand, six hundred forty-four".