6745939 has 2 divisors, whose sum is σ = 6745940. Its totient is φ = 6745938.

The previous prime is 6745927. The next prime is 6745943. The reversal of 6745939 is 9395476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6745939 - 2⁷ = 6745811 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6745895 and 6745904.

It is not a weakly prime, because it can be changed into another prime (6745909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3372969 + 3372970.

It is an arithmetic number, because the mean of its divisors is an integer number (3372970).

Almost surely, 2^6745939 is an apocalyptic number.

6745939 is a deficient number, since it is larger than the sum of its proper divisors (1).

6745939 is an equidigital number, since it uses as much as digits as its factorization.

6745939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 6745939 is about 2597.2945539542. The cubic root of 6745939 is about 188.9502495893.

The spelling of 6745939 in words is "six million, seven hundred forty-five thousand, nine hundred thirty-nine".