636427344 has 160 divisors (see below), whose sum is σ = 1995586560. Its totient is φ = 170726400.

The previous prime is 636427331. The next prime is 636427349. The reversal of 636427344 is 443724636.

636427344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×636427344³ (a number of 27 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636427349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 835924 + ... + 836684.

It is an arithmetic number, because the mean of its divisors is an integer number (12472416).

Almost surely, 2^636427344 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 636427344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997793280).

636427344 is an abundant number, since it is smaller than the sum of its proper divisors (1359159216).

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

636427344 is a wasteful number, since it uses less digits than its factorization.

636427344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 923 counting only the distinct ones).

The product of its digits is 290304, while the sum is 39.

The square root of 636427344 is about 25227.5116489915. The cubic root of 636427344 is about 860.1673299788.

The spelling of 636427344 in words is "six hundred thirty-six million, four hundred twenty-seven thousand, three hundred forty-four".