6445868 has 48 divisors (see below), whose sum is σ = 13547520. Its totient is φ = 2644800.

The previous prime is 6445853. The next prime is 6445871. The reversal of 6445868 is 8685446.

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 15 ways as a sum of consecutive naturals, for example, 33653 + ... + 33843.

It is an arithmetic number, because the mean of its divisors is an integer number (282240).

Almost surely, 2^6445868 is an apocalyptic number.

It is an amenable number.

6445868 is an abundant number, since it is smaller than the sum of its proper divisors (7101652).

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

6445868 is a wasteful number, since it uses less digits than its factorization.

6445868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 276 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 6445868 is about 2538.8714028087. The cubic root of 6445868 is about 186.1060404318.

The spelling of 6445868 in words is "six million, four hundred forty-five thousand, eight hundred sixty-eight".