6390744 has 16 divisors (see below), whose sum is σ = 15976920. Its totient is φ = 2130240.

The previous prime is 6390733. The next prime is 6390749. The reversal of 6390744 is 4470936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6390749) 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, 133117 + ... + 133164.

Almost surely, 2^6390744 is an apocalyptic number.

It is an amenable number.

6390744 is an abundant number, since it is smaller than the sum of its proper divisors (9586176).

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

6390744 is a wasteful number, since it uses less digits than its factorization.

6390744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266290 (or 266286 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 6390744 is about 2527.9920885952. The cubic root of 6390744 is about 185.5740048561.

The spelling of 6390744 in words is "six million, three hundred ninety thousand, seven hundred forty-four".