636938245 has 8 divisors (see below), whose sum is σ = 788981760. Its totient is φ = 493113360.

The previous prime is 636938221. The next prime is 636938249. The reversal of 636938245 is 542839636.

It is a happy number.

636938245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 636938245 - 2⁷ = 636938117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 636938195 and 636938204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636938249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2054485 + ... + 2054794.

It is an arithmetic number, because the mean of its divisors is an integer number (98622720).

Almost surely, 2^636938245 is an apocalyptic number.

It is an amenable number.

636938245 is a deficient number, since it is larger than the sum of its proper divisors (152043515).

636938245 is a wasteful number, since it uses less digits than its factorization.

636938245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109315.

The product of its digits is 933120, while the sum is 46.

The square root of 636938245 is about 25237.6354875016. The cubic root of 636938245 is about 860.3974388888.

The spelling of 636938245 in words is "six hundred thirty-six million, nine hundred thirty-eight thousand, two hundred forty-five".