636562 has 4 divisors (see below), whose sum is σ = 954846. Its totient is φ = 318280.

The previous prime is 636553. The next prime is 636563. The reversal of 636562 is 265636.

636562 is nontrivially palindromic in base 3.

636562 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 491401 + 145161 = 701^2 + 381^2 .

It is a super-2 number, since 2×636562² = 810422359688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 636562.

It is not an unprimeable number, because it can be changed into a prime (636563) by changing a digit.

636562 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 as a sum of consecutive naturals, namely, 159139 + ... + 159142.

2⁶³⁶⁵⁶² is an apocalyptic number.

636562 is a deficient number, since it is larger than the sum of its proper divisors (318284).

636562 is a wasteful number, since it uses less digits than its factorization.

636562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318283.

The product of its digits is 6480, while the sum is 28.

The square root of 636562 is about 797.8483565190. The cubic root of 636562 is about 86.0227990752.

The spelling of 636562 in words is "six hundred thirty-six thousand, five hundred sixty-two".