636055047 has 12 divisors (see below), whose sum is σ = 920736544. Its totient is φ = 423118080.

The previous prime is 636055037. The next prime is 636055061. The reversal of 636055047 is 740550636.

636055047 is a `hidden beast` number, since 6 + 3 + 60 + 550 + 47 = 666.

It is not a de Polignac number, because 636055047 - 2⁴ = 636055031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636055037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72154 + ... + 80487.

Almost surely, 2^636055047 is an apocalyptic number.

636055047 is a deficient number, since it is larger than the sum of its proper divisors (284681497).

636055047 is a wasteful number, since it uses less digits than its factorization.

636055047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153110 (or 153107 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 636055047 is about 25220.1317799888. The cubic root of 636055047 is about 859.9995704883. Note that the first 3 decimals are identical.

The spelling of 636055047 in words is "six hundred thirty-six million, fifty-five thousand, forty-seven".