6400884 has 48 divisors (see below), whose sum is σ = 17204096. Its totient is φ = 1814400.

The previous prime is 6400873. The next prime is 6400921. The reversal of 6400884 is 4880046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14994 + ... + 15414.

Almost surely, 2^6400884 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 6400884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8602048).

6400884 is an abundant number, since it is smaller than the sum of its proper divisors (10803212).

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

6400884 is a wasteful number, since it uses less digits than its factorization.

6400884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 6400884 is about 2529.9968379427. The cubic root of 6400884 is about 185.6721012104.

The spelling of 6400884 in words is "six million, four hundred thousand, eight hundred eighty-four".