636430000 has 100 divisors (see below), whose sum is σ = 1591340608. Its totient is φ = 246240000.

The previous prime is 636429979. The next prime is 636430009. The reversal of 636430000 is 34636.

636430000 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (100).

It is not an unprimeable number, because it can be changed into a prime (636430009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 308974 + ... + 311026.

Almost surely, 2^636430000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 636430000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (795670304).

636430000 is an abundant number, since it is smaller than the sum of its proper divisors (954910608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

636430000 is a wasteful number, since it uses less digits than its factorization.

636430000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 636430000 is about 25227.5642898794. The cubic root of 636430000 is about 860.1685265549.

Adding to 636430000 its reverse (34636), we get a palindrome (636464636).

The spelling of 636430000 in words is "six hundred thirty-six million, four hundred thirty thousand".