6879997 has 2 divisors, whose sum is σ = 6879998. Its totient is φ = 6879996.

The previous prime is 6879973. The next prime is 6880009. The reversal of 6879997 is 7999786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4866436 + 2013561 = 2206^2 + 1419^2 .

It is a cyclic number.

It is not a de Polignac number, because 6879997 - 2⁷ = 6879869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6879947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3439998 + 3439999.

It is an arithmetic number, because the mean of its divisors is an integer number (3439999).

Almost surely, 2^6879997 is an apocalyptic number.

It is an amenable number.

6879997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6879997 is an equidigital number, since it uses as much as digits as its factorization.

6879997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 55.

The square root of 6879997 is about 2622.9748378511. The cubic root of 6879997 is about 190.1936806167.

The spelling of 6879997 in words is "six million, eight hundred seventy-nine thousand, nine hundred ninety-seven".