636068 has 6 divisors (see below), whose sum is σ = 1113126. Its totient is φ = 318032.

The previous prime is 636061. The next prime is 636071. The reversal of 636068 is 860636.

It can be written as a sum of positive squares in only one way, i.e., 574564 + 61504 = 758^2 + 248^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 636068.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 636068.

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

636068 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, 79505 + ... + 79512.

It is an arithmetic number, because the mean of its divisors is an integer number (185521).

636068 is a Friedman number, since it can be written as 86^(3+0)+6+6, using all its digits and the basic arithmetic operations.

2⁶³⁶⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

636068 is a deficient number, since it is larger than the sum of its proper divisors (477058).

636068 is a wasteful number, since it uses less digits than its factorization.

636068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159021 (or 159019 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 636068 is about 797.5387137939. The cubic root of 636068 is about 86.0005408295. Note that the first 3 decimals are identical.

The spelling of 636068 in words is "six hundred thirty-six thousand, sixty-eight".