6698722194 has 192 divisors, whose sum is σ = 16951334400. Its totient is φ = 1970189568.

The previous prime is 6698722187. The next prime is 6698722201. The reversal of 6698722194 is 4912278966.

It is an interprime number because it is at equal distance from previous prime (6698722187) and next prime (6698722201).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 6698722194.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21819789 + ... + 21820095.

It is an arithmetic number, because the mean of its divisors is an integer number (88288200).

Almost surely, 2^6698722194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6698722194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8475667200).

6698722194 is an abundant number, since it is smaller than the sum of its proper divisors (10252612206).

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

6698722194 is a wasteful number, since it uses less digits than its factorization.

6698722194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 487 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 6698722194 is about 81845.7219040800. The cubic root of 6698722194 is about 1885.0837764106.

The spelling of 6698722194 in words is "six billion, six hundred ninety-eight million, seven hundred twenty-two thousand, one hundred ninety-four".