6698657716 has 6 divisors (see below), whose sum is σ = 11722651010. Its totient is φ = 3349328856.

The previous prime is 6698657699. The next prime is 6698657729. The reversal of 6698657716 is 6177568966.

It can be written as a sum of positive squares in only one way, i.e., 5889027600 + 809630116 = 76740^2 + 28454^2 .

It is a super-2 number, since 2×6698657716² = 89744030392252673312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 837332211 + ... + 837332218.

Almost surely, 2^6698657716 is an apocalyptic number.

It is an amenable number.

6698657716 is a deficient number, since it is larger than the sum of its proper divisors (5023993294).

6698657716 is a wasteful number, since it uses less digits than its factorization.

6698657716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674664433 (or 1674664431 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 61.

The square root of 6698657716 is about 81845.3280034969. The cubic root of 6698657716 is about 1885.0777281516.

The spelling of 6698657716 in words is "six billion, six hundred ninety-eight million, six hundred fifty-seven thousand, seven hundred sixteen".