6698816136 has 96 divisors (see below), whose sum is σ = 19273494240. Its totient is φ = 2094626304.

The previous prime is 6698816039. The next prime is 6698816147. The reversal of 6698816136 is 6316188966.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 366855 + ... + 384681.

It is an arithmetic number, because the mean of its divisors is an integer number (200765565).

Almost surely, 2^6698816136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6698816136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9636747120).

6698816136 is an abundant number, since it is smaller than the sum of its proper divisors (12574678104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6698816136 is a wasteful number, since it uses less digits than its factorization.

6698816136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18163 (or 18156 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 6698816136 is about 81846.2957988937. The cubic root of 6698816136 is about 1885.0925884252.

The spelling of 6698816136 in words is "six billion, six hundred ninety-eight million, eight hundred sixteen thousand, one hundred thirty-six".