636229 has 4 divisors (see below), whose sum is σ = 694080. Its totient is φ = 578380.

The previous prime is 636217. The next prime is 636241. The reversal of 636229 is 922636.

636229 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (636217) and next prime (636241).

It is not a de Polignac number, because 636229 - 2¹¹ = 634181 is a prime.

It is a Duffinian number.

636229 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 636197 and 636206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28909 + ... + 28930.

It is an arithmetic number, because the mean of its divisors is an integer number (173520).

2⁶³⁶²²⁹ is an apocalyptic number.

It is an amenable number.

636229 is a deficient number, since it is larger than the sum of its proper divisors (57851).

636229 is a wasteful number, since it uses less digits than its factorization.

636229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57850.

The product of its digits is 3888, while the sum is 28.

The square root of 636229 is about 797.6396429466. The cubic root of 636229 is about 86.0077963006.

The spelling of 636229 in words is "six hundred thirty-six thousand, two hundred twenty-nine".