63685 has 8 divisors (see below), whose sum is σ = 78336. Its totient is φ = 49680.

The previous prime is 63671. The next prime is 63689. The reversal of 63685 is 58636.

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

It is not a de Polignac number, because 63685 - 2¹¹ = 61637 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63689) 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, 100 + ... + 370.

It is an arithmetic number, because the mean of its divisors is an integer number (9792).

2⁶³⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

63685 is a deficient number, since it is larger than the sum of its proper divisors (14651).

63685 is a wasteful number, since it uses less digits than its factorization.

63685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323.

The product of its digits is 4320, while the sum is 28.

The square root of 63685 is about 252.3588714510. The cubic root of 63685 is about 39.9342670386.

The spelling of 63685 in words is "sixty-three thousand, six hundred eighty-five".