6398964 has 108 divisors (see below), whose sum is σ = 19316388. Its totient is φ = 1774080.

The previous prime is 6398941. The next prime is 6398981. The reversal of 6398964 is 4698936.

6398964 is a `hidden beast` number, since 639 + 8 + 9 + 6 + 4 = 666.

6398964 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 435600 + 5963364 = 660^2 + 2442^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 56572 + ... + 56684.

Almost surely, 2^6398964 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 6398964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9658194).

6398964 is an abundant number, since it is smaller than the sum of its proper divisors (12917424).

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

6398964 is a wasteful number, since it uses less digits than its factorization.

6398964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 142 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 6398964 is about 2529.6173623693. The cubic root of 6398964 is about 185.6535347080.

The spelling of 6398964 in words is "six million, three hundred ninety-eight thousand, nine hundred sixty-four".