636484 has 12 divisors (see below), whose sum is σ = 1141308. Its totient is φ = 310400.

The previous prime is 636473. The next prime is 636499. The reversal of 636484 is 484636.

It can be written as a sum of positive squares in 2 ways, for example, as 184900 + 451584 = 430^2 + 672^2 .

It is a super-2 number, since 2×636484² = 810223764512, which contains 22 as substring.

It is an unprimeable number.

636484 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, 1777 + ... + 2104.

It is an arithmetic number, because the mean of its divisors is an integer number (95109).

2⁶³⁶⁴⁸⁴ is an apocalyptic number.

It is an amenable number.

636484 is a deficient number, since it is larger than the sum of its proper divisors (504824).

636484 is a wasteful number, since it uses less digits than its factorization.

636484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3926 (or 3924 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 636484 is about 797.7994735521. The cubic root of 636484 is about 86.0192853811.

The spelling of 636484 in words is "six hundred thirty-six thousand, four hundred eighty-four".