6440104 has 24 divisors (see below), whose sum is σ = 13274730. Its totient is φ = 2926880.

The previous prime is 6440099. The next prime is 6440113. The reversal of 6440104 is 4010446.

It can be written as a sum of positive squares in only one way, i.e., 6400900 + 39204 = 2530^2 + 198^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2359 + ... + 4294.

Almost surely, 2^6440104 is an apocalyptic number.

It is an amenable number.

6440104 is an abundant number, since it is smaller than the sum of its proper divisors (6834626).

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

6440104 is a wasteful number, since it uses less digits than its factorization.

6440104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681 (or 6666 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 6440104 is about 2537.7359988777. The cubic root of 6440104 is about 186.0505508726.

The spelling of 6440104 in words is "six million, four hundred forty thousand, one hundred four".