6397216704 has 280 divisors, whose sum is σ = 20181173760. Its totient is φ = 1997996544.

The previous prime is 6397216697. The next prime is 6397216717. The reversal of 6397216704 is 4076127936.

6397216704 is a `hidden beast` number, since 639 + 7 + 2 + 1 + 6 + 7 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 6397216704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10538769 + ... + 10539375.

Almost surely, 2^6397216704 is an apocalyptic number.

6397216704 is a gapful number since it is divisible by the number (64) 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 6397216704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10090586880).

6397216704 is an abundant number, since it is smaller than the sum of its proper divisors (13783957056).

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

6397216704 is a wasteful number, since it uses less digits than its factorization.

6397216704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 6397216704 is about 79982.6025082955. The cubic root of 6397216704 is about 1856.3663503439.

The spelling of 6397216704 in words is "six billion, three hundred ninety-seven million, two hundred sixteen thousand, seven hundred four".