5605631865 has 16 divisors (see below), whose sum is σ = 9965568000. Its totient is φ = 2989670256.

The previous prime is 5605631851. The next prime is 5605631891. The reversal of 5605631865 is 5681365065.

5605631865 is a `hidden beast` number, since 5 + 6 + 0 + 5 + 631 + 8 + 6 + 5 = 666.

It is not a de Polignac number, because 5605631865 - 2¹⁴ = 5605615481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5605631865.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20761465 + ... + 20761734.

It is an arithmetic number, because the mean of its divisors is an integer number (622848000).

Almost surely, 2^5605631865 is an apocalyptic number.

It is an amenable number.

5605631865 is a deficient number, since it is larger than the sum of its proper divisors (4359936135).

5605631865 is a wasteful number, since it uses less digits than its factorization.

5605631865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41523213 (or 41523207 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 5605631865 is about 74870.7677601880. The cubic root of 5605631865 is about 1776.4031082555.

The spelling of 5605631865 in words is "five billion, six hundred five million, six hundred thirty-one thousand, eight hundred sixty-five".