636056646 has 16 divisors (see below), whose sum is σ = 1272428784. Its totient is φ = 211966304.

The previous prime is 636056627. The next prime is 636056653. The reversal of 636056646 is 646650636.

It is a happy number.

636056646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 636056598 and 636056607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19180 + ... + 40496.

It is an arithmetic number, because the mean of its divisors is an integer number (79526799).

Almost surely, 2^636056646 is an apocalyptic number.

636056646 is an abundant number, since it is smaller than the sum of its proper divisors (636372138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636056646 is a wasteful number, since it uses less digits than its factorization.

636056646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26295.

The product of its (nonzero) digits is 466560, while the sum is 42.

The square root of 636056646 is about 25220.1634808341. The cubic root of 636056646 is about 860.0002911483. Note that the first 3 decimals are identical.

The spelling of 636056646 in words is "six hundred thirty-six million, fifty-six thousand, six hundred forty-six".