636226994 has 16 divisors (see below), whose sum is σ = 1029526848. Its totient is φ = 293135952.

The previous prime is 636226973. The next prime is 636227003. The reversal of 636226994 is 499622636.

636226994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 5582 + ... + 36105.

It is an arithmetic number, because the mean of its divisors is an integer number (64345428).

Almost surely, 2^636226994 is an apocalyptic number.

636226994 is a deficient number, since it is larger than the sum of its proper divisors (393299854).

636226994 is a wasteful number, since it uses less digits than its factorization.

636226994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42289.

The product of its digits is 839808, while the sum is 47.

The square root of 636226994 is about 25223.5404731374. The cubic root of 636226994 is about 860.0770590766.

The spelling of 636226994 in words is "six hundred thirty-six million, two hundred twenty-six thousand, nine hundred ninety-four".