6939717 has 4 divisors (see below), whose sum is σ = 9252960. Its totient is φ = 4626476.

The previous prime is 6939697. The next prime is 6939733. The reversal of 6939717 is 7179396.

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.

It is a cyclic number.

It is not a de Polignac number, because 6939717 - 2⁷ = 6939589 is a prime.

It is a D-number.

6939717 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6939797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1156617 + ... + 1156622.

It is an arithmetic number, because the mean of its divisors is an integer number (2313240).

Almost surely, 2^6939717 is an apocalyptic number.

It is an amenable number.

6939717 is a deficient number, since it is larger than the sum of its proper divisors (2313243).

6939717 is a wasteful number, since it uses less digits than its factorization.

6939717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313242.

The product of its digits is 71442, while the sum is 42.

The square root of 6939717 is about 2634.3342612508. The cubic root of 6939717 is about 190.7424046808.

Subtracting from 6939717 its sum of digits (42), we obtain a triangular number (6939675 = T₃₇₂₅).

The spelling of 6939717 in words is "six million, nine hundred thirty-nine thousand, seven hundred seventeen".