6466643 has 8 divisors (see below), whose sum is σ = 6689760. Its totient is φ = 6246720.

The previous prime is 6466633. The next prime is 6466661. The reversal of 6466643 is 3466646.

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

It is a cyclic number.

It is not a de Polignac number, because 6466643 - 2⁴ = 6466627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6466633) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3746 + ... + 5192.

It is an arithmetic number, because the mean of its divisors is an integer number (836220).

Almost surely, 2^6466643 is an apocalyptic number.

6466643 is a deficient number, since it is larger than the sum of its proper divisors (223117).

6466643 is a wasteful number, since it uses less digits than its factorization.

6466643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597.

The product of its digits is 62208, while the sum is 35.

The square root of 6466643 is about 2542.9594963349. The cubic root of 6466643 is about 186.3057656235.

The spelling of 6466643 in words is "six million, four hundred sixty-six thousand, six hundred forty-three".