5643687312 has 50 divisors (see below), whose sum is σ = 16334472198. Its totient is φ = 1881228672.

The previous prime is 5643687311. The next prime is 5643687337. The reversal of 5643687312 is 2137863465.

5643687312 is a `hidden beast` number, since 564 + 3 + 6 + 8 + 73 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5085971856 + 557715456 = 71316^2 + 23616^2 .

It is not an unprimeable number, because it can be changed into a prime (5643687311) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2176053 + ... + 2178644.

Almost surely, 2^5643687312 is an apocalyptic number.

It is an amenable number.

5643687312 is an abundant number, since it is smaller than the sum of its proper divisors (10690784886).

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

5643687312 is a wasteful number, since it uses less digits than its factorization.

5643687312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4354717 (or 4354702 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 5643687312 is about 75124.4787802218. The cubic root of 5643687312 is about 1780.4139204884.

The spelling of 5643687312 in words is "five billion, six hundred forty-three million, six hundred eighty-seven thousand, three hundred twelve".