636342 has 32 divisors (see below), whose sum is σ = 1478400. Its totient is φ = 178848.

The previous prime is 636331. The next prime is 636343. The reversal of 636342 is 243636.

It is a super-2 number, since 2×636342² = 809862281928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4509 + ... + 4647.

It is an arithmetic number, because the mean of its divisors is an integer number (46200).

2⁶³⁶³⁴² is an apocalyptic number.

636342 is an abundant number, since it is smaller than the sum of its proper divisors (842058).

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

636342 is a wasteful number, since it uses less digits than its factorization.

636342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260.

The product of its digits is 2592, while the sum is 24.

The square root of 636342 is about 797.7104737936. The cubic root of 636342 is about 86.0128879189.

Adding to 636342 its reverse (243636), we get a palindrome (879978).

It can be divided in two parts, 63634 and 2, that added together give a palindrome (63636).

The spelling of 636342 in words is "six hundred thirty-six thousand, three hundred forty-two".