6442768 has 20 divisors (see below), whose sum is σ = 12536028. Its totient is φ = 3207680.

The previous prime is 6442763. The next prime is 6442771. The reversal of 6442768 is 8672446.

It can be written as a sum of positive squares in 2 ways, for example, as 4875264 + 1567504 = 2208^2 + 1252^2 .

It is not an unprimeable number, because it can be changed into a prime (6442763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3780 + ... + 5212.

Almost surely, 2^6442768 is an apocalyptic number.

It is an amenable number.

6442768 is a deficient number, since it is larger than the sum of its proper divisors (6093260).

6442768 is a wasteful number, since it uses less digits than its factorization.

6442768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722 (or 1716 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 6442768 is about 2538.2608219015. The cubic root of 6442768 is about 186.0762010971.

The spelling of 6442768 in words is "six million, four hundred forty-two thousand, seven hundred sixty-eight".