6980909 has 8 divisors (see below), whose sum is σ = 7777560. Its totient is φ = 6221376.

The previous prime is 6980903. The next prime is 6980927. The reversal of 6980909 is 9090896.

It can be written as a sum of positive squares in 4 ways, for example, as 64009 + 6916900 = 253^2 + 2630^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6980909 is a prime.

It is a Duffinian number.

6980909 is a modest number, since divided by 909 gives 698 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6980903) 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 7 ways as a sum of consecutive naturals, for example, 8882 + ... + 9635.

It is an arithmetic number, because the mean of its divisors is an integer number (972195).

Almost surely, 2^6980909 is an apocalyptic number.

It is an amenable number.

6980909 is a deficient number, since it is larger than the sum of its proper divisors (796651).

6980909 is a wasteful number, since it uses less digits than its factorization.

6980909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18559.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 6980909 is about 2642.1409879111. The cubic root of 6980909 is about 191.1190562794.

The spelling of 6980909 in words is "six million, nine hundred eighty thousand, nine hundred nine".