6698924909 has 2 divisors, whose sum is σ = 6698924910. Its totient is φ = 6698924908.

The previous prime is 6698924839. The next prime is 6698924917. The reversal of 6698924909 is 9094298966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6689604100 + 9320809 = 81790^2 + 3053^2 .

It is a cyclic number.

It is not a de Polignac number, because 6698924909 - 2²⁸ = 6430489453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6698924989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3349462454 + 3349462455.

It is an arithmetic number, because the mean of its divisors is an integer number (3349462455).

Almost surely, 2^6698924909 is an apocalyptic number.

It is an amenable number.

6698924909 is a deficient number, since it is larger than the sum of its proper divisors (1).

6698924909 is an equidigital number, since it uses as much as digits as its factorization.

6698924909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15116544, while the sum is 62.

The square root of 6698924909 is about 81846.9602917543. The cubic root of 6698924909 is about 1885.1027915248.

The spelling of 6698924909 in words is "six billion, six hundred ninety-eight million, nine hundred twenty-four thousand, nine hundred nine".