6408018 has 32 divisors (see below), whose sum is σ = 14515200. Its totient is φ = 2094768.

The previous prime is 6407981. The next prime is 6408023. The reversal of 6408018 is 8108046.

6408018 is a `hidden beast` number, since 640 + 8 + 0 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6407982 and 6408000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1743 + ... + 3981.

It is an arithmetic number, because the mean of its divisors is an integer number (453600).

Almost surely, 2^6408018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6408018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7257600).

6408018 is an abundant number, since it is smaller than the sum of its proper divisors (8107182).

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

6408018 is a wasteful number, since it uses less digits than its factorization.

6408018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 6408018 is about 2531.4063285060. The cubic root of 6408018 is about 185.7410548620.

The spelling of 6408018 in words is "six million, four hundred eight thousand, eighteen".