285963 has 8 divisors (see below), whose sum is σ = 384000. Its totient is φ = 189288.

The previous prime is 285953. The next prime is 285977. The reversal of 285963 is 369582.

It is a happy number.

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

It is not a de Polignac number, because 285963 - 2⁸ = 285707 is a prime.

It is a d-powerful number, because it can be written as 2¹⁸ + 8⁴ + 9 + 5² + 6 + 3⁹ .

It is not an unprimeable number, because it can be changed into a prime (285953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358 + ... + 836.

It is an arithmetic number, because the mean of its divisors is an integer number (48000).

2²⁸⁵⁹⁶³ is an apocalyptic number.

285963 is a deficient number, since it is larger than the sum of its proper divisors (98037).

285963 is a wasteful number, since it uses less digits than its factorization.

285963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681.

The product of its digits is 12960, while the sum is 33.

The square root of 285963 is about 534.7550841273. The cubic root of 285963 is about 65.8824814142.

The spelling of 285963 in words is "two hundred eighty-five thousand, nine hundred sixty-three".