636014971 has 4 divisors (see below), whose sum is σ = 636172992. Its totient is φ = 635856952.

The previous prime is 636014969. The next prime is 636014989. The reversal of 636014971 is 179410636.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 636014971 - 2¹ = 636014969 is a prime.

It is a super-2 number, since 2×636014971² = 809030086672261682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 636014971.

It is not an unprimeable number, because it can be changed into a prime (636014671) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 72811 + ... + 81076.

It is an arithmetic number, because the mean of its divisors is an integer number (159043248).

Almost surely, 2^636014971 is an apocalyptic number.

636014971 is a deficient number, since it is larger than the sum of its proper divisors (158021).

636014971 is a wasteful number, since it uses less digits than its factorization.

636014971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158020.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 636014971 is about 25219.3372434725. The cubic root of 636014971 is about 859.9815080754.

The spelling of 636014971 in words is "six hundred thirty-six million, fourteen thousand, nine hundred seventy-one".