6680929979 has 2 divisors, whose sum is σ = 6680929980. Its totient is φ = 6680929978.

The previous prime is 6680929889. The next prime is 6680929993. The reversal of 6680929979 is 9799290866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6680929979 - 2¹² = 6680925883 is a prime.

It is not a weakly prime, because it can be changed into another prime (6680929279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340464989 + 3340464990.

It is an arithmetic number, because the mean of its divisors is an integer number (3340464990).

Almost surely, 2^6680929979 is an apocalyptic number.

6680929979 is a deficient number, since it is larger than the sum of its proper divisors (1).

6680929979 is an equidigital number, since it uses as much as digits as its factorization.

6680929979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26453952, while the sum is 65.

The square root of 6680929979 is about 81736.9560174588. The cubic root of 6680929979 is about 1883.4133307463.

The spelling of 6680929979 in words is "six billion, six hundred eighty million, nine hundred twenty-nine thousand, nine hundred seventy-nine".