636073245 has 12 divisors (see below), whose sum is σ = 1102527036. Its totient is φ = 339239040.

The previous prime is 636073237. The next prime is 636073261. The reversal of 636073245 is 542370636.

636073245 is a `hidden beast` number, since 6 + 3 + 607 + 3 + 2 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 306215001 + 329858244 = 17499^2 + 18162^2 .

It is not a de Polignac number, because 636073245 - 2³ = 636073237 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7067436 + ... + 7067525.

It is an arithmetic number, because the mean of its divisors is an integer number (91877253).

Almost surely, 2^636073245 is an apocalyptic number.

It is an amenable number.

636073245 is a deficient number, since it is larger than the sum of its proper divisors (466453791).

636073245 is a wasteful number, since it uses less digits than its factorization.

636073245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14134972 (or 14134969 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The square root of 636073245 is about 25220.4925606143. The cubic root of 636073245 is about 860.0077721490.

The spelling of 636073245 in words is "six hundred thirty-six million, seventy-three thousand, two hundred forty-five".