6738391 has 16 divisors (see below), whose sum is σ = 7676928. Its totient is φ = 5860800.

The previous prime is 6738383. The next prime is 6738419. The reversal of 6738391 is 1938376.

It is not a de Polignac number, because 6738391 - 2³ = 6738383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6738391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6738301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30106 + ... + 30328.

It is an arithmetic number, because the mean of its divisors is an integer number (479808).

Almost surely, 2^6738391 is an apocalyptic number.

6738391 is a deficient number, since it is larger than the sum of its proper divisors (938537).

6738391 is a wasteful number, since it uses less digits than its factorization.

6738391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342.

The product of its digits is 27216, while the sum is 37.

The square root of 6738391 is about 2595.8410968316. The cubic root of 6738391 is about 188.8797514355.

The spelling of 6738391 in words is "six million, seven hundred thirty-eight thousand, three hundred ninety-one".