6749904 has 40 divisors (see below), whose sum is σ = 19929280. Its totient is φ = 1928448.

The previous prime is 6749903. The next prime is 6749917. The reversal of 6749904 is 4099476.

It is a super-2 number, since 2×6749904² = 91122408018432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6749903) 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, 9709 + ... + 10380.

It is an arithmetic number, because the mean of its divisors is an integer number (498232).

Almost surely, 2^6749904 is an apocalyptic number.

It is an amenable number.

6749904 is an abundant number, since it is smaller than the sum of its proper divisors (13179376).

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

6749904 is a wasteful number, since it uses less digits than its factorization.

6749904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20107 (or 20101 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 6749904 is about 2598.0577360790. The cubic root of 6749904 is about 188.9872615361.

The spelling of 6749904 in words is "six million, seven hundred forty-nine thousand, nine hundred four".