636476967 has 16 divisors (see below), whose sum is σ = 1077633280. Its totient is φ = 363701016.

The previous prime is 636476887. The next prime is 636477041. The reversal of 636476967 is 769674636.

It is not a de Polignac number, because 636476967 - 2¹⁰ = 636475943 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 (636474967) 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, 1683613 + ... + 1683990.

It is an arithmetic number, because the mean of its divisors is an integer number (67352080).

Almost surely, 2^636476967 is an apocalyptic number.

636476967 is a deficient number, since it is larger than the sum of its proper divisors (441156313).

636476967 is a wasteful number, since it uses less digits than its factorization.

636476967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367619 (or 3367613 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 54.

The square root of 636476967 is about 25228.4951394252. The cubic root of 636476967 is about 860.1896854891.

The spelling of 636476967 in words is "six hundred thirty-six million, four hundred seventy-six thousand, nine hundred sixty-seven".