6979961 has 2 divisors, whose sum is σ = 6979962. Its totient is φ = 6979960.

The previous prime is 6979957. The next prime is 6979967. The reversal of 6979961 is 1699796.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6760000 + 219961 = 2600^2 + 469^2 .

It is a cyclic number.

It is not a de Polignac number, because 6979961 - 2² = 6979957 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6979967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3489980 + 3489981.

It is an arithmetic number, because the mean of its divisors is an integer number (3489981).

Almost surely, 2^6979961 is an apocalyptic number.

It is an amenable number.

6979961 is a deficient number, since it is larger than the sum of its proper divisors (1).

6979961 is an equidigital number, since it uses as much as digits as its factorization.

6979961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 47.

The square root of 6979961 is about 2641.9615818554. The cubic root of 6979961 is about 191.1104046330.

The spelling of 6979961 in words is "six million, nine hundred seventy-nine thousand, nine hundred sixty-one".