6691359659 has 2 divisors, whose sum is σ = 6691359660. Its totient is φ = 6691359658.

The previous prime is 6691359643. The next prime is 6691359673. The reversal of 6691359659 is 9569531966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6691359659 - 2⁴ = 6691359643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6691359598 and 6691359607.

It is not a weakly prime, because it can be changed into another prime (6691359359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345679829 + 3345679830.

It is an arithmetic number, because the mean of its divisors is an integer number (3345679830).

Almost surely, 2^6691359659 is an apocalyptic number.

6691359659 is a deficient number, since it is larger than the sum of its proper divisors (1).

6691359659 is an equidigital number, since it uses as much as digits as its factorization.

6691359659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11809800, while the sum is 59.

The square root of 6691359659 is about 81800.7314087105. The cubic root of 6691359659 is about 1884.3928942410.

The spelling of 6691359659 in words is "six billion, six hundred ninety-one million, three hundred fifty-nine thousand, six hundred fifty-nine".