6979720 has 64 divisors (see below), whose sum is σ = 17755200. Its totient is φ = 2446080.

The previous prime is 6979703. The next prime is 6979727. The reversal of 6979720 is 279796.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6979727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12487 + ... + 13033.

It is an arithmetic number, because the mean of its divisors is an integer number (277425).

Almost surely, 2^6979720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6979720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8877600).

6979720 is an abundant number, since it is smaller than the sum of its proper divisors (10775480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6979720 is a wasteful number, since it uses less digits than its factorization.

6979720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 6979720 is about 2641.9159714117. The cubic root of 6979720 is about 191.1082050917.

The spelling of 6979720 in words is "six million, nine hundred seventy-nine thousand, seven hundred twenty".