6698924989 has 2 divisors, whose sum is σ = 6698924990. Its totient is φ = 6698924988.

The previous prime is 6698924971. The next prime is 6698925011. The reversal of 6698924989 is 9894298966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6374744964 + 324180025 = 79842^2 + 18005^2 .

It is a cyclic number.

It is not a de Polignac number, because 6698924989 - 2¹¹ = 6698922941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6698924909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3349462494 + 3349462495.

It is an arithmetic number, because the mean of its divisors is an integer number (3349462495).

Almost surely, 2^6698924989 is an apocalyptic number.

It is an amenable number.

6698924989 is a deficient number, since it is larger than the sum of its proper divisors (1).

6698924989 is an equidigital number, since it uses as much as digits as its factorization.

6698924989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120932352, while the sum is 70.

The square root of 6698924989 is about 81846.9607804713. The cubic root of 6698924989 is about 1885.1027990289.

The spelling of 6698924989 in words is "six billion, six hundred ninety-eight million, nine hundred twenty-four thousand, nine hundred eighty-nine".