6698929969 has 4 divisors (see below), whose sum is σ = 6699095140. Its totient is φ = 6698764800.

The previous prime is 6698929843. The next prime is 6698929981. The reversal of 6698929969 is 9699298966.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6050972944 + 647957025 = 77788^2 + 25455^2 .

It is a cyclic number.

It is not a de Polignac number, because 6698929969 - 2¹³ = 6698921777 is a prime.

It is a super-2 number, since 2×6698929969² = 89751325459132681922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6698929669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24769 + ... + 118369.

It is an arithmetic number, because the mean of its divisors is an integer number (1674773785).

Almost surely, 2^6698929969 is an apocalyptic number.

It is an amenable number.

6698929969 is a deficient number, since it is larger than the sum of its proper divisors (165171).

6698929969 is an equidigital number, since it uses as much as digits as its factorization.

6698929969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165170.

The product of its digits is 204073344, while the sum is 73.

The square root of 6698929969 is about 81846.9912030980. The cubic root of 6698929969 is about 1885.1032661591.

The spelling of 6698929969 in words is "six billion, six hundred ninety-eight million, nine hundred twenty-nine thousand, nine hundred sixty-nine".