6749109 has 8 divisors (see below), whose sum is σ = 9998720. Its totient is φ = 4499388.

The previous prime is 6749107. The next prime is 6749117. The reversal of 6749109 is 9019476.

It is not a de Polignac number, because 6749109 - 2¹ = 6749107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6749107) 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, 124957 + ... + 125010.

It is an arithmetic number, because the mean of its divisors is an integer number (1249840).

Almost surely, 2^6749109 is an apocalyptic number.

It is an amenable number.

6749109 is a deficient number, since it is larger than the sum of its proper divisors (3249611).

6749109 is a wasteful number, since it uses less digits than its factorization.

6749109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249976 (or 249970 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 6749109 is about 2597.9047326644. The cubic root of 6749109 is about 188.9798416394.

The spelling of 6749109 in words is "six million, seven hundred forty-nine thousand, one hundred nine".