6743909 has 4 divisors (see below), whose sum is σ = 6749760. Its totient is φ = 6738060.

The previous prime is 6743887. The next prime is 6743923. The reversal of 6743909 is 9093476.

6743909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6743909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6743929) 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, 557 + ... + 3714.

It is an arithmetic number, because the mean of its divisors is an integer number (1687440).

Almost surely, 2^6743909 is an apocalyptic number.

It is an amenable number.

6743909 is a deficient number, since it is larger than the sum of its proper divisors (5851).

6743909 is a wasteful number, since it uses less digits than its factorization.

6743909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 6743909 is about 2596.9037332947. The cubic root of 6743909 is about 188.9312946058.

The spelling of 6743909 in words is "six million, seven hundred forty-three thousand, nine hundred nine".