6744636 has 36 divisors (see below), whose sum is σ = 17449432. Its totient is φ = 2195424.

The previous prime is 6744613. The next prime is 6744653. The reversal of 6744636 is 6364476.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×6744636² = 90980229544992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6744636.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 631 + ... + 3726.

Almost surely, 2^6744636 is an apocalyptic number.

It is an amenable number.

6744636 is an abundant number, since it is smaller than the sum of its proper divisors (10704796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6744636 is a wasteful number, since it uses less digits than its factorization.

6744636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410 (or 4405 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 6744636 is about 2597.0437039064. The cubic root of 6744636 is about 188.9380833548.

The spelling of 6744636 in words is "six million, seven hundred forty-four thousand, six hundred thirty-six".