6397866960 has 160 divisors (see below), whose sum is σ = 20939612160. Its totient is φ = 1611477504.

The previous prime is 6397866947. The next prime is 6397866961. The reversal of 6397866960 is 696687936.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 6397866894 and 6397866903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6397866961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1671609 + ... + 1675431.

It is an arithmetic number, because the mean of its divisors is an integer number (130872576).

Almost surely, 2^6397866960 is an apocalyptic number.

6397866960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6397866960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10469806080).

6397866960 is an abundant number, since it is smaller than the sum of its proper divisors (14541745200).

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

6397866960 is a wasteful number, since it uses less digits than its factorization.

6397866960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225 (or 4219 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 60.

The square root of 6397866960 is about 79986.6673890093. The cubic root of 6397866960 is about 1856.4292460540.

The spelling of 6397866960 in words is "six billion, three hundred ninety-seven million, eight hundred sixty-six thousand, nine hundred sixty".