636144106 has 8 divisors (see below), whose sum is σ = 1027617444. Its totient is φ = 293604960.

The previous prime is 636144101. The next prime is 636144127. The reversal of 636144106 is 601441636.

It can be written as a sum of positive squares in 2 ways, for example, as 624550081 + 11594025 = 24991^2 + 3405^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (636144101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12233515 + ... + 12233566.

Almost surely, 2^636144106 is an apocalyptic number.

636144106 is a deficient number, since it is larger than the sum of its proper divisors (391473338).

636144106 is a wasteful number, since it uses less digits than its factorization.

636144106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24467096.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 636144106 is about 25221.8973513096. The cubic root of 636144106 is about 860.0397070183.

The spelling of 636144106 in words is "six hundred thirty-six million, one hundred forty-four thousand, one hundred six".