854643 has 4 divisors (see below), whose sum is σ = 1139528. Its totient is φ = 569760.

The previous prime is 854629. The next prime is 854647. The reversal of 854643 is 346458.

854643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 854643 - 2⁸ = 854387 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 854643.

It is not an unprimeable number, because it can be changed into a prime (854647) 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, 142438 + ... + 142443.

It is an arithmetic number, because the mean of its divisors is an integer number (284882).

2⁸⁵⁴⁶⁴³ is an apocalyptic number.

854643 is a deficient number, since it is larger than the sum of its proper divisors (284885).

854643 is a wasteful number, since it uses less digits than its factorization.

854643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284884.

The product of its digits is 11520, while the sum is 30.

The square root of 854643 is about 924.4690367990. The cubic root of 854643 is about 94.8989877392.

The spelling of 854643 in words is "eight hundred fifty-four thousand, six hundred forty-three".