6979775 has 24 divisors (see below), whose sum is σ = 10003824. Its totient is φ = 4774400.

The previous prime is 6979771. The next prime is 6979781. The reversal of 6979775 is 5779796.

It is not a de Polignac number, because 6979775 - 2² = 6979771 is a prime.

It is a Duffinian number.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 3929 + ... + 5421.

It is an arithmetic number, because the mean of its divisors is an integer number (416826).

Almost surely, 2^6979775 is an apocalyptic number.

6979775 is a deficient number, since it is larger than the sum of its proper divisors (3024049).

6979775 is a wasteful number, since it uses less digits than its factorization.

6979775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531 (or 1526 counting only the distinct ones).

The product of its digits is 833490, while the sum is 50.

The square root of 6979775 is about 2641.9263805034. The cubic root of 6979775 is about 191.1087070662.

The spelling of 6979775 in words is "six million, nine hundred seventy-nine thousand, seven hundred seventy-five".