636120471 has 16 divisors (see below), whose sum is σ = 979322624. Its totient is φ = 359748864.

The previous prime is 636120461. The next prime is 636120491. The reversal of 636120471 is 174021636.

It is not a de Polignac number, because 636120471 - 2¹⁹ = 635596183 is a prime.

It is a super-3 number, since 3×636120471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636120421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154105 + ... + 158178.

It is an arithmetic number, because the mean of its divisors is an integer number (61207664).

Almost surely, 2^636120471 is an apocalyptic number.

636120471 is a deficient number, since it is larger than the sum of its proper divisors (343202153).

636120471 is a wasteful number, since it uses less digits than its factorization.

636120471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312390.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 636120471 is about 25221.4288056803. The cubic root of 636120471 is about 860.0290557156.

The spelling of 636120471 in words is "six hundred thirty-six million, one hundred twenty thousand, four hundred seventy-one".