6397846776 has 128 divisors (see below), whose sum is σ = 18852134400. Its totient is φ = 2003443200.

The previous prime is 6397846771. The next prime is 6397846799. The reversal of 6397846776 is 6776487936.

6397846776 is a `hidden beast` number, since 6 + 39 + 78 + 467 + 76 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6397846771) 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, 2506701 + ... + 2509251.

It is an arithmetic number, because the mean of its divisors is an integer number (147282300).

Almost surely, 2^6397846776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6397846776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9426067200).

6397846776 is an abundant number, since it is smaller than the sum of its proper divisors (12454287624).

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

6397846776 is a wasteful number, since it uses less digits than its factorization.

6397846776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266 (or 3256 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 63.

The square root of 6397846776 is about 79986.5412178824. The cubic root of 6397846776 is about 1856.4272938300.

The spelling of 6397846776 in words is "six billion, three hundred ninety-seven million, eight hundred forty-six thousand, seven hundred seventy-six".