6979855 has 8 divisors (see below), whose sum is σ = 8391600. Its totient is φ = 5573376.

The previous prime is 6979853. The next prime is 6979871. The reversal of 6979855 is 5589796.

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 6979855 - 2¹ = 6979853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6979799 and 6979808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6979853) 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, 2751 + ... + 4639.

It is an arithmetic number, because the mean of its divisors is an integer number (1048950).

Almost surely, 2^6979855 is an apocalyptic number.

6979855 is a deficient number, since it is larger than the sum of its proper divisors (1411745).

6979855 is a wasteful number, since it uses less digits than its factorization.

6979855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633.

The product of its digits is 680400, while the sum is 49.

The square root of 6979855 is about 2641.9415209274. The cubic root of 6979855 is about 191.1094372062.

The spelling of 6979855 in words is "six million, nine hundred seventy-nine thousand, eight hundred fifty-five".