5643250665 has 32 divisors (see below), whose sum is σ = 9774729216. Its totient is φ = 2763651840.

The previous prime is 5643250651. The next prime is 5643250673. The reversal of 5643250665 is 5660523465.

It is not a de Polignac number, because 5643250665 - 2⁶ = 5643250601 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38514 + ... + 113003.

It is an arithmetic number, because the mean of its divisors is an integer number (305460288).

Almost surely, 2^5643250665 is an apocalyptic number.

It is an amenable number.

5643250665 is a deficient number, since it is larger than the sum of its proper divisors (4131478551).

5643250665 is a wasteful number, since it uses less digits than its factorization.

5643250665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151729.

The product of its (nonzero) digits is 648000, while the sum is 42.

The square root of 5643250665 is about 75121.5725674057. The cubic root of 5643250665 is about 1780.3680029641.

The spelling of 5643250665 in words is "five billion, six hundred forty-three million, two hundred fifty thousand, six hundred sixty-five".