636000345 has 24 divisors (see below), whose sum is σ = 1167249096. Its totient is φ = 319246848.

The previous prime is 636000329. The next prime is 636000349. The reversal of 636000345 is 543000636.

It can be written as a sum of positive squares in 4 ways, for example, as 6843456 + 629156889 = 2616^2 + 25083^2 .

It is not a de Polignac number, because 636000345 - 2⁴ = 636000329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (636000349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 414922 + ... + 416451.

It is an arithmetic number, because the mean of its divisors is an integer number (48635379).

Almost surely, 2^636000345 is an apocalyptic number.

It is an amenable number.

636000345 is a deficient number, since it is larger than the sum of its proper divisors (531248751).

636000345 is a wasteful number, since it uses less digits than its factorization.

636000345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831401 (or 831398 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 636000345 is about 25219.0472659060. The cubic root of 636000345 is about 859.9749158900.

The spelling of 636000345 in words is "six hundred thirty-six million, three hundred forty-five", and thus it is an aban number.