6400704 has 112 divisors (see below), whose sum is σ = 18763488. Its totient is φ = 1916928.

The previous prime is 6400697. The next prime is 6400717. The reversal of 6400704 is 4070046.

6400704 is a modest number, since divided by 704 gives 640 as remainder.

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, 120742 + ... + 120794.

Almost surely, 2^6400704 is an apocalyptic number.

6400704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6400704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9381744).

6400704 is an abundant number, since it is smaller than the sum of its proper divisors (12362784).

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

6400704 is a wasteful number, since it uses less digits than its factorization.

6400704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 6400704 is about 2529.9612645256. The cubic root of 6400704 is about 185.6703607585.

The spelling of 6400704 in words is "six million, four hundred thousand, seven hundred four".