6597988398 has 24 divisors (see below), whose sum is σ = 14317360200. Its totient is φ = 2195988144.

The previous prime is 6597988379. The next prime is 6597988399. The reversal of 6597988398 is 8938897956.

6597988398 is a `hidden beast` number, since 65 + 97 + 98 + 8 + 398 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6597988399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266253 + ... + 289976.

It is an arithmetic number, because the mean of its divisors is an integer number (596556675).

Almost surely, 2^6597988398 is an apocalyptic number.

6597988398 is an abundant number, since it is smaller than the sum of its proper divisors (7719371802).

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

6597988398 is a wasteful number, since it uses less digits than its factorization.

6597988398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556896 (or 556893 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 72.

The square root of 6597988398 is about 81228.0025483823. The cubic root of 6597988398 is about 1875.5868644023.

The spelling of 6597988398 in words is "six billion, five hundred ninety-seven million, nine hundred eighty-eight thousand, three hundred ninety-eight".