635664016 has 20 divisors (see below), whose sum is σ = 1326337852. Its totient is φ = 293383296.

The previous prime is 635664011. The next prime is 635664023. The reversal of 635664016 is 610466536.

635664016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 169104016 + 466560000 = 13004^2 + 21600^2 .

It is not an unprimeable number, because it can be changed into a prime (635664011) 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, 1527831 + ... + 1528246.

Almost surely, 2^635664016 is an apocalyptic number.

It is an amenable number.

635664016 is an abundant number, since it is smaller than the sum of its proper divisors (690673836).

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

635664016 is a wasteful number, since it uses less digits than its factorization.

635664016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056098 (or 3056092 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 635664016 is about 25212.3782297506. The cubic root of 635664016 is about 859.8232988324.

The spelling of 635664016 in words is "six hundred thirty-five million, six hundred sixty-four thousand, sixteen".