6406884 has 48 divisors (see below), whose sum is σ = 18123840. Its totient is φ = 1941120.

The previous prime is 6406879. The next prime is 6406913. The reversal of 6406884 is 4886046.

6406884 is a `hidden beast` number, since 640 + 6 + 8 + 8 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 1509 + ... + 3884.

It is an arithmetic number, because the mean of its divisors is an integer number (377580).

Almost surely, 2^6406884 is an apocalyptic number.

It is an amenable number.

6406884 is an abundant number, since it is smaller than the sum of its proper divisors (11716956).

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

6406884 is a wasteful number, since it uses less digits than its factorization.

6406884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417 (or 5409 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 6406884 is about 2531.1823324289. The cubic root of 6406884 is about 185.7300976112.

The spelling of 6406884 in words is "six million, four hundred six thousand, eight hundred eighty-four".