6979777 has 4 divisors (see below), whose sum is σ = 7976896. Its totient is φ = 5982660.

The previous prime is 6979771. The next prime is 6979781. The reversal of 6979777 is 7779796.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6979777 - 2³ = 6979769 is a prime.

It is an Ulam number.

It is a Duffinian number.

6979777 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6979771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498549 + ... + 498562.

It is an arithmetic number, because the mean of its divisors is an integer number (1994224).

Almost surely, 2^6979777 is an apocalyptic number.

It is an amenable number.

6979777 is a deficient number, since it is larger than the sum of its proper divisors (997119).

6979777 is an equidigital number, since it uses as much as digits as its factorization.

6979777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997118.

The product of its digits is 1166886, while the sum is 52.

The square root of 6979777 is about 2641.9267590151. The cubic root of 6979777 is about 191.1087253198.

The spelling of 6979777 in words is "six million, nine hundred seventy-nine thousand, seven hundred seventy-seven".