63785 has 4 divisors (see below), whose sum is σ = 76548. Its totient is φ = 51024.

The previous prime is 63781. The next prime is 63793. The reversal of 63785 is 58736.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29929 + 33856 = 173^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 63785 - 2² = 63781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63781) 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, 6374 + ... + 6383.

It is an arithmetic number, because the mean of its divisors is an integer number (19137).

2⁶³⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

63785 is a deficient number, since it is larger than the sum of its proper divisors (12763).

63785 is a wasteful number, since it uses less digits than its factorization.

63785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12762.

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

The square root of 63785 is about 252.5569242765. The cubic root of 63785 is about 39.9551580822.

It can be divided in two parts, 637 and 85, that multiplied together give a palindrome (54145).

The spelling of 63785 in words is "sixty-three thousand, seven hundred eighty-five".