6397797320 has 16 divisors (see below), whose sum is σ = 14395044060. Its totient is φ = 2559118912.

The previous prime is 6397797319. The next prime is 6397797331. The reversal of 6397797320 is 237977936.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5154952804 + 1242844516 = 71798^2 + 35254^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79972427 + ... + 79972506.

Almost surely, 2^6397797320 is an apocalyptic number.

It is an amenable number.

6397797320 is an abundant number, since it is smaller than the sum of its proper divisors (7997246740).

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

6397797320 is a wasteful number, since it uses less digits than its factorization.

6397797320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159944944 (or 159944940 counting only the distinct ones).

The product of its (nonzero) digits is 3000564, while the sum is 53.

The square root of 6397797320 is about 79986.2320652748. The cubic root of 6397797320 is about 1856.4225103610.

The spelling of 6397797320 in words is "six billion, three hundred ninety-seven million, seven hundred ninety-seven thousand, three hundred twenty".