6442646 has 8 divisors (see below), whose sum is σ = 11044560. Its totient is φ = 2761128.

The previous prime is 6442633. The next prime is 6442661. The reversal of 6442646 is 6462446.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 230081 + ... + 230108.

It is an arithmetic number, because the mean of its divisors is an integer number (1380570).

Almost surely, 2^6442646 is an apocalyptic number.

6442646 is a deficient number, since it is larger than the sum of its proper divisors (4601914).

6442646 is a wasteful number, since it uses less digits than its factorization.

6442646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460198.

The product of its digits is 27648, while the sum is 32.

The square root of 6442646 is about 2538.2367895845. The cubic root of 6442646 is about 186.0750265792.

The spelling of 6442646 in words is "six million, four hundred forty-two thousand, six hundred forty-six".