636059668 has 12 divisors (see below), whose sum is σ = 1151487540. Its totient is φ = 307063232.

The previous prime is 636059659. The next prime is 636059701. The reversal of 636059668 is 866950636.

It can be written as a sum of positive squares in 2 ways, for example, as 298529284 + 337530384 = 17278^2 + 18372^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2741521 + ... + 2741752.

It is an arithmetic number, because the mean of its divisors is an integer number (95957295).

Almost surely, 2^636059668 is an apocalyptic number.

It is an amenable number.

636059668 is a deficient number, since it is larger than the sum of its proper divisors (515427872).

636059668 is a wasteful number, since it uses less digits than its factorization.

636059668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483306 (or 5483304 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 49.

The square root of 636059668 is about 25220.2233931423. The cubic root of 636059668 is about 860.0016531427.

The spelling of 636059668 in words is "six hundred thirty-six million, fifty-nine thousand, six hundred sixty-eight".