6397880 has 32 divisors (see below), whose sum is σ = 14469840. Its totient is φ = 2545920.

The previous prime is 6397871. The next prime is 6397891. The reversal of 6397880 is 887936.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12020 + ... + 12540.

Almost surely, 2^6397880 is an apocalyptic number.

It is an amenable number.

6397880 is an abundant number, since it is smaller than the sum of its proper divisors (8071960).

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

6397880 is a wasteful number, since it uses less digits than its factorization.

6397880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 6397880 is about 2529.4030916404. The cubic root of 6397880 is about 185.6430507298.

The spelling of 6397880 in words is "six million, three hundred ninety-seven thousand, eight hundred eighty".