53686 has 8 divisors (see below), whose sum is σ = 85320. Its totient is φ = 25248.

The previous prime is 53681. The next prime is 53693. The reversal of 53686 is 68635.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53681) 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, 756 + ... + 823.

It is an arithmetic number, because the mean of its divisors is an integer number (10665).

2⁵³⁶⁸⁶ is an apocalyptic number.

53686 is a deficient number, since it is larger than the sum of its proper divisors (31634).

53686 is a wasteful number, since it uses less digits than its factorization.

53686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598.

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

The square root of 53686 is about 231.7023953264. The cubic root of 53686 is about 37.7242269587.

The spelling of 53686 in words is "fifty-three thousand, six hundred eighty-six".