635996320 has 48 divisors (see below), whose sum is σ = 1506774528. Its totient is φ = 253681920.

The previous prime is 635996297. The next prime is 635996323. The reversal of 635996320 is 23699536.

It is not an unprimeable number, because it can be changed into a prime (635996323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53305 + ... + 64135.

It is an arithmetic number, because the mean of its divisors is an integer number (31391136).

Almost surely, 2^635996320 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 635996320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753387264).

635996320 is an abundant number, since it is smaller than the sum of its proper divisors (870778208).

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

635996320 is a wasteful number, since it uses less digits than its factorization.

635996320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11213 (or 11205 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 43.

The square root of 635996320 is about 25218.9674649856. The cubic root of 635996320 is about 859.9731017367.

The spelling of 635996320 in words is "six hundred thirty-five million, nine hundred ninety-six thousand, three hundred twenty".