6404946 has 8 divisors (see below), whose sum is σ = 12809904. Its totient is φ = 2134980.

The previous prime is 6404929. The next prime is 6404987. The reversal of 6404946 is 6494046.

It is a sphenic number, since it is the product of 3 distinct primes.

6404946 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 533740 + ... + 533751.

It is an arithmetic number, because the mean of its divisors is an integer number (1601238).

Almost surely, 2^6404946 is an apocalyptic number.

6404946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6404946 is a wasteful number, since it uses less digits than its factorization.

6404946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067496.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 6404946 is about 2530.7994784257. The cubic root of 6404946 is about 185.7113687341.

The spelling of 6404946 in words is "six million, four hundred four thousand, nine hundred forty-six".