8466643 has 4 divisors (see below), whose sum is σ = 8475520. Its totient is φ = 8457768.

The previous prime is 8466611. The next prime is 8466671. The reversal of 8466643 is 3466648.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8466643 - 2⁵ = 8466611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8466683) 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, 2808 + ... + 4981.

It is an arithmetic number, because the mean of its divisors is an integer number (2118880).

Almost surely, 2^8466643 is an apocalyptic number.

8466643 is a deficient number, since it is larger than the sum of its proper divisors (8877).

8466643 is a wasteful number, since it uses less digits than its factorization.

8466643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8876.

The product of its digits is 82944, while the sum is 37.

The square root of 8466643 is about 2909.7496455881. The cubic root of 8466643 is about 203.8154408584.

The spelling of 8466643 in words is "eight million, four hundred sixty-six thousand, six hundred forty-three".