84636 has 18 divisors (see below), whose sum is σ = 214032. Its totient is φ = 28200.

The previous prime is 84631. The next prime is 84649. The reversal of 84636 is 63648.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84631) by changing a digit.

84636 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 5 ways as a sum of consecutive naturals, for example, 1140 + ... + 1211.

2⁸⁴⁶³⁶ is an apocalyptic number.

It is an amenable number.

84636 is an abundant number, since it is smaller than the sum of its proper divisors (129396).

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

84636 is a wasteful number, since it uses less digits than its factorization.

84636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2356 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 84636 is about 290.9226701376. The cubic root of 84636 is about 43.9054443290.

The spelling of 84636 in words is "eighty-four thousand, six hundred thirty-six".