6397635168 has 72 divisors (see below), whose sum is σ = 18780181056. Its totient is φ = 2063750400.

The previous prime is 6397635163. The next prime is 6397635191. The reversal of 6397635168 is 8615367936.

6397635168 is a `hidden beast` number, since 63 + 9 + 7 + 63 + 516 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6397635163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349363 + ... + 367218.

It is an arithmetic number, because the mean of its divisors is an integer number (260835848).

Almost surely, 2^6397635168 is an apocalyptic number.

It is an amenable number.

6397635168 is an abundant number, since it is smaller than the sum of its proper divisors (12382545888).

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

6397635168 is a wasteful number, since it uses less digits than its factorization.

6397635168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716628 (or 716617 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 6397635168 is about 79985.2184344082. The cubic root of 6397635168 is about 1856.4068265691.

The spelling of 6397635168 in words is "six billion, three hundred ninety-seven million, six hundred thirty-five thousand, one hundred sixty-eight".