6398695926 has 384 divisors, whose sum is σ = 18598035456. Its totient is φ = 1606832640.

The previous prime is 6398695921. The next prime is 6398695951. The reversal of 6398695926 is 6295968936.

6398695926 is a `hidden beast` number, since 6 + 39 + 8 + 6 + 9 + 592 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6398695921) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 77092681 + ... + 77092763.

It is an arithmetic number, because the mean of its divisors is an integer number (48432384).

Almost surely, 2^6398695926 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6398695926, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9299017728).

6398695926 is an abundant number, since it is smaller than the sum of its proper divisors (12199339530).

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

6398695926 is a wasteful number, since it uses less digits than its factorization.

6398695926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 186 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 63.

The square root of 6398695926 is about 79991.8491222700. The cubic root of 6398695926 is about 1856.5094212267.

The spelling of 6398695926 in words is "six billion, three hundred ninety-eight million, six hundred ninety-five thousand, nine hundred twenty-six".