636364331 has 4 divisors (see below), whose sum is σ = 637739232. Its totient is φ = 634989432.

The previous prime is 636364319. The next prime is 636364367. The reversal of 636364331 is 133463636.

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 636364331 - 2¹⁴ = 636347947 is a prime.

It is a super-2 number, since 2×636364331² = 809919123538155122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 636364291 and 636364300.

It is not an unprimeable number, because it can be changed into a prime (636364301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686756 + ... + 687681.

It is an arithmetic number, because the mean of its divisors is an integer number (159434808).

Almost surely, 2^636364331 is an apocalyptic number.

636364331 is a deficient number, since it is larger than the sum of its proper divisors (1374901).

636364331 is a wasteful number, since it uses less digits than its factorization.

636364331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374900.

The product of its digits is 69984, while the sum is 35.

The square root of 636364331 is about 25226.2627235982. The cubic root of 636364331 is about 860.1389405047.

The spelling of 636364331 in words is "six hundred thirty-six million, three hundred sixty-four thousand, three hundred thirty-one".