6404608 has 40 divisors (see below), whose sum is σ = 14632992. Its totient is φ = 2743296.

The previous prime is 6404599. The next prime is 6404611. The reversal of 6404608 is 8064046.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2691 + ... + 4477.

Almost surely, 2^6404608 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 6404608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7316496).

6404608 is an abundant number, since it is smaller than the sum of its proper divisors (8228384).

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

6404608 is an equidigital number, since it uses as much as digits as its factorization.

6404608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812 (or 1796 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 6404608 is about 2530.7327002273. The cubic root of 6404608 is about 185.7081019074.

The spelling of 6404608 in words is "six million, four hundred four thousand, six hundred eight".