6979681 has 8 divisors (see below), whose sum is σ = 7324928. Its totient is φ = 6642000.

The previous prime is 6979667. The next prime is 6979697. The reversal of 6979681 is 1869796.

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

It is a cyclic number.

It is not a de Polignac number, because 6979681 - 2¹⁷ = 6848609 is a prime.

It is a super-2 number, since 2×6979681² = 97431893723522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6979381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46 + ... + 3736.

It is an arithmetic number, because the mean of its divisors is an integer number (915616).

Almost surely, 2^6979681 is an apocalyptic number.

6979681 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6979681 is a deficient number, since it is larger than the sum of its proper divisors (345247).

6979681 is a wasteful number, since it uses less digits than its factorization.

6979681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783.

The product of its digits is 163296, while the sum is 46.

The square root of 6979681 is about 2641.9085903945. The cubic root of 6979681 is about 191.1078491446.

The spelling of 6979681 in words is "six million, nine hundred seventy-nine thousand, six hundred eighty-one".