283965 has 16 divisors (see below), whose sum is σ = 495936. Its totient is φ = 137600.

The previous prime is 283961. The next prime is 283979. The reversal of 283965 is 569382.

It is a happy number.

It is not a de Polignac number, because 283965 - 2² = 283961 is a prime.

It is a super-2 number, since 2×283965² = 161272242450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a d-powerful number, because it can be written as 2¹⁰ + 8² + 9³ + 3⁷ + 6⁷ + 5² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696 + ... + 1025.

It is an arithmetic number, because the mean of its divisors is an integer number (30996).

2²⁸³⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

283965 is a deficient number, since it is larger than the sum of its proper divisors (211971).

283965 is a wasteful number, since it uses less digits than its factorization.

283965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740.

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

The square root of 283965 is about 532.8836646023. The cubic root of 283965 is about 65.7286841706.

It can be divided in two parts, 28 and 3965, that added together give a palindrome (3993).

The spelling of 283965 in words is "two hundred eighty-three thousand, nine hundred sixty-five".