63786 has 8 divisors (see below), whose sum is σ = 127584. Its totient is φ = 21260.

The previous prime is 63781. The next prime is 63793. The reversal of 63786 is 68736.

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

63786 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (63781) by changing a digit.

63786 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5310 + ... + 5321.

It is an arithmetic number, because the mean of its divisors is an integer number (15948).

2⁶³⁷⁸⁶ is an apocalyptic number.

63786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63792).

63786 is a wasteful number, since it uses less digits than its factorization.

63786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10636.

The product of its digits is 6048, while the sum is 30.

The square root of 63786 is about 252.5589040204. The cubic root of 63786 is about 39.9553668823.

Subtracting 63786 from its reverse (68736), we obtain a triangular number (4950 = T₉₉).

The spelling of 63786 in words is "sixty-three thousand, seven hundred eighty-six".