808643 has 12 divisors (see below), whose sum is σ = 916104. Its totient is φ = 712800.

The previous prime is 808637. The next prime is 808651. The reversal of 808643 is 346808.

808643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 808643 - 2⁴ = 808627 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4880 + ... + 5042.

It is an arithmetic number, because the mean of its divisors is an integer number (76342).

2⁸⁰⁸⁶⁴³ is an apocalyptic number.

808643 is a deficient number, since it is larger than the sum of its proper divisors (107461).

808643 is a wasteful number, since it uses less digits than its factorization.

808643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 808643 is about 899.2457950972. The cubic root of 808643 is about 93.1648903470.

The spelling of 808643 in words is "eight hundred eight thousand, six hundred forty-three".