6694343749 has 2 divisors, whose sum is σ = 6694343750. Its totient is φ = 6694343748.

The previous prime is 6694343717. The next prime is 6694343857. The reversal of 6694343749 is 9473434966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6687150625 + 7193124 = 81775^2 + 2682^2 .

It is a cyclic number.

It is not a de Polignac number, because 6694343749 - 2⁵ = 6694343717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6694343749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6694341749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3347171874 + 3347171875.

It is an arithmetic number, because the mean of its divisors is an integer number (3347171875).

Almost surely, 2^6694343749 is an apocalyptic number.

It is an amenable number.

6694343749 is a deficient number, since it is larger than the sum of its proper divisors (1).

6694343749 is an equidigital number, since it uses as much as digits as its factorization.

6694343749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 55.

The square root of 6694343749 is about 81818.9693714117. The cubic root of 6694343749 is about 1884.6729749508.

The spelling of 6694343749 in words is "six billion, six hundred ninety-four million, three hundred forty-three thousand, seven hundred forty-nine".