636069 has 12 divisors (see below), whose sum is σ = 986784. Its totient is φ = 363384.

The previous prime is 636061. The next prime is 636071. The reversal of 636069 is 960636.

636069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 636069 - 2³ = 636061 is a prime.

It is a super-2 number, since 2×636069² = 809167545522, which contains 22 as substring.

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 636069.

It is not an unprimeable number, because it can be changed into a prime (636061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2017 + ... + 2310.

It is an arithmetic number, because the mean of its divisors is an integer number (82232).

2⁶³⁶⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

636069 is a deficient number, since it is larger than the sum of its proper divisors (350715).

636069 is a wasteful number, since it uses less digits than its factorization.

636069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344 (or 4337 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 636069 is about 797.5393407224. The cubic root of 636069 is about 86.0005858983. Note that the first 3 decimals are identical.

The spelling of 636069 in words is "six hundred thirty-six thousand, sixty-nine".