283643 has 4 divisors (see below), whose sum is σ = 286920. Its totient is φ = 280368.

The previous prime is 283639. The next prime is 283669. The reversal of 283643 is 346382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346382 = 2 ⋅173191.

It is a cyclic number.

It is not a de Polignac number, because 283643 - 2² = 283639 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 283643.

It is not an unprimeable number, because it can be changed into a prime (285643) 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, 1505 + ... + 1682.

It is an arithmetic number, because the mean of its divisors is an integer number (71730).

2²⁸³⁶⁴³ is an apocalyptic number.

283643 is a deficient number, since it is larger than the sum of its proper divisors (3277).

283643 is an equidigital number, since it uses as much as digits as its factorization.

283643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276.

The product of its digits is 3456, while the sum is 26.

The square root of 283643 is about 532.5814491700. The cubic root of 283643 is about 65.7038305898.

The spelling of 283643 in words is "two hundred eighty-three thousand, six hundred forty-three".