6446872 has 8 divisors (see below), whose sum is σ = 12087900. Its totient is φ = 3223432.

The previous prime is 6446863. The next prime is 6446929. The reversal of 6446872 is 2786446.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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 as a sum of consecutive naturals, namely, 402922 + ... + 402937.

Almost surely, 2^6446872 is an apocalyptic number.

It is an amenable number.

6446872 is a deficient number, since it is larger than the sum of its proper divisors (5641028).

6446872 is a wasteful number, since it uses less digits than its factorization.

6446872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805865 (or 805861 counting only the distinct ones).

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

The square root of 6446872 is about 2539.0691207606. The cubic root of 6446872 is about 186.1157024749.

The spelling of 6446872 in words is "six million, four hundred forty-six thousand, eight hundred seventy-two".