6977979 has 12 divisors (see below), whose sum is σ = 10120032. Its totient is φ = 4633200.

The previous prime is 6977969. The next prime is 6978001. The reversal of 6977979 is 9797796.

It is not a de Polignac number, because 6977979 - 2⁸ = 6977723 is a prime.

6977979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6977969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1009 + ... + 3869.

It is an arithmetic number, because the mean of its divisors is an integer number (843336).

Almost surely, 2^6977979 is an apocalyptic number.

6977979 is a deficient number, since it is larger than the sum of its proper divisors (3142053).

6977979 is a wasteful number, since it uses less digits than its factorization.

6977979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138 (or 3135 counting only the distinct ones).

The product of its digits is 1500282, while the sum is 54.

The square root of 6977979 is about 2641.5864551440. The cubic root of 6977979 is about 191.0923139551.

The spelling of 6977979 in words is "six million, nine hundred seventy-seven thousand, nine hundred seventy-nine".