636252 has 24 divisors (see below), whose sum is σ = 1525776. Its totient is φ = 206208.

The previous prime is 636247. The next prime is 636257. The reversal of 636252 is 252636.

It is an interprime number because it is at equal distance from previous prime (636247) and next prime (636257).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 636252.

It is not an unprimeable number, because it can be changed into a prime (636257) by changing a digit.

636252 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273 + ... + 1160.

It is an arithmetic number, because the mean of its divisors is an integer number (63574).

2⁶³⁶²⁵² is an apocalyptic number.

It is an amenable number.

636252 is an abundant number, since it is smaller than the sum of its proper divisors (889524).

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

636252 is a wasteful number, since it uses less digits than its factorization.

636252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1475 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 636252 is about 797.6540603545. The cubic root of 636252 is about 86.0088326965.

Adding to 636252 its reverse (252636), we get a palindrome (888888).

It can be divided in two parts, 636 and 252, that added together give a palindrome (888).

The spelling of 636252 in words is "six hundred thirty-six thousand, two hundred fifty-two".