6979957 has 2 divisors, whose sum is σ = 6979958. Its totient is φ = 6979956.

The previous prime is 6979943. The next prime is 6979961. The reversal of 6979957 is 7599796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4626801 + 2353156 = 2151^2 + 1534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6979957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6979937) 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, 3489978 + 3489979.

It is an arithmetic number, because the mean of its divisors is an integer number (3489979).

Almost surely, 2^6979957 is an apocalyptic number.

It is an amenable number.

6979957 is a deficient number, since it is larger than the sum of its proper divisors (1).

6979957 is an equidigital number, since it uses as much as digits as its factorization.

6979957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1071630, while the sum is 52.

The square root of 6979957 is about 2641.9608248420. The cubic root of 6979957 is about 191.1103681265.

The spelling of 6979957 in words is "six million, nine hundred seventy-nine thousand, nine hundred fifty-seven".