6979872 has 24 divisors (see below), whose sum is σ = 18322416. Its totient is φ = 2326592.

The previous prime is 6979871. The next prime is 6979883. The reversal of 6979872 is 2789796.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×6979872² = 97437226272768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (6979871) 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 3 ways as a sum of consecutive naturals, for example, 36258 + ... + 36449.

It is an arithmetic number, because the mean of its divisors is an integer number (763434).

Almost surely, 2^6979872 is an apocalyptic number.

It is an amenable number.

6979872 is an abundant number, since it is smaller than the sum of its proper divisors (11342544).

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

6979872 is a wasteful number, since it uses less digits than its factorization.

6979872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72720 (or 72712 counting only the distinct ones).

The product of its digits is 381024, while the sum is 48.

The square root of 6979872 is about 2641.9447382563. The cubic root of 6979872 is about 191.1095923602.

The spelling of 6979872 in words is "six million, nine hundred seventy-nine thousand, eight hundred seventy-two".