65783 has 4 divisors (see below), whose sum is σ = 66360. Its totient is φ = 65208.

The previous prime is 65777. The next prime is 65789. The reversal of 65783 is 38756.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (65777) and next prime (65789).

It is a cyclic number.

It is not a de Polignac number, because 65783 - 2⁶ = 65719 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 5³ + 7⁵ + 8 + 3⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65789) 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, 53 + ... + 366.

It is an arithmetic number, because the mean of its divisors is an integer number (16590).

2⁶⁵⁷⁸³ is an apocalyptic number.

65783 is a deficient number, since it is larger than the sum of its proper divisors (577).

65783 is a wasteful number, since it uses less digits than its factorization.

65783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576.

The product of its digits is 5040, while the sum is 29.

The square root of 65783 is about 256.4819681771. The cubic root of 65783 is about 40.3680612191.

It can be divided in two parts, 65 and 783, that added together give a palindrome (848).

The spelling of 65783 in words is "sixty-five thousand, seven hundred eighty-three".