6698738717 has 6 divisors (see below), whose sum is σ = 7363076574. Its totient is φ = 6089762360.

The previous prime is 6698738713. The next prime is 6698738723. The reversal of 6698738717 is 7178378966.

It can be written as a sum of positive squares in only one way, i.e., 4732614436 + 1966124281 = 68794^2 + 44341^2 .

It is not a de Polignac number, because 6698738717 - 2² = 6698738713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6698738717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6698738713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27680618 + ... + 27680859.

It is an arithmetic number, because the mean of its divisors is an integer number (1227179429).

Almost surely, 2^6698738717 is an apocalyptic number.

It is an amenable number.

6698738717 is a deficient number, since it is larger than the sum of its proper divisors (664337857).

6698738717 is a wasteful number, since it uses less digits than its factorization.

6698738717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55361499 (or 55361488 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 62.

The square root of 6698738717 is about 81845.8228439302. The cubic root of 6698738717 is about 1885.0853263188.

The spelling of 6698738717 in words is "six billion, six hundred ninety-eight million, seven hundred thirty-eight thousand, seven hundred seventeen".