6398736 has 40 divisors (see below), whose sum is σ = 16695360. Its totient is φ = 2111616.

The previous prime is 6398731. The next prime is 6398737. The reversal of 6398736 is 6378936.

It is not an unprimeable number, because it can be changed into a prime (6398731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4621 + ... + 5843.

It is an arithmetic number, because the mean of its divisors is an integer number (417384).

Almost surely, 2^6398736 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 6398736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8347680).

6398736 is an abundant number, since it is smaller than the sum of its proper divisors (10296624).

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

6398736 is a wasteful number, since it uses less digits than its factorization.

6398736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343 (or 1337 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 6398736 is about 2529.5722958635. The cubic root of 6398736 is about 185.6513296892.

The spelling of 6398736 in words is "six million, three hundred ninety-eight thousand, seven hundred thirty-six".