6698345217 has 16 divisors (see below), whose sum is σ = 8992477440. Its totient is φ = 4434952592.

The previous prime is 6698345189. The next prime is 6698345231. The reversal of 6698345217 is 7125438966.

It is a cyclic number.

It is not a de Polignac number, because 6698345217 - 2⁶ = 6698345153 is a prime.

It is a super-2 number, since 2×6698345217² = 89735657292213554178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6698345217.

It is not an unprimeable number, because it can be changed into a prime (6698343217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436558 + ... + 451640.

It is an arithmetic number, because the mean of its divisors is an integer number (562029840).

Almost surely, 2^6698345217 is an apocalyptic number.

It is an amenable number.

6698345217 is a deficient number, since it is larger than the sum of its proper divisors (2294132223).

6698345217 is a wasteful number, since it uses less digits than its factorization.

6698345217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16092.

The product of its digits is 2177280, while the sum is 51.

The square root of 6698345217 is about 81843.4188985284. The cubic root of 6698345217 is about 1885.0484141163.

The spelling of 6698345217 in words is "six billion, six hundred ninety-eight million, three hundred forty-five thousand, two hundred seventeen".