5605905638 has 8 divisors (see below), whose sum is σ = 8418341232. Its totient is φ = 2799791896.

The previous prime is 5605905619. The next prime is 5605905661. The reversal of 5605905638 is 8365095065.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 5605905592 and 5605905601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578245 + ... + 1581792.

It is an arithmetic number, because the mean of its divisors is an integer number (1052292654).

Almost surely, 2^5605905638 is an apocalyptic number.

5605905638 is a deficient number, since it is larger than the sum of its proper divisors (2812435594).

5605905638 is a wasteful number, since it uses less digits than its factorization.

5605905638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160926.

The product of its (nonzero) digits is 972000, while the sum is 47.

The square root of 5605905638 is about 74872.5960415425. The cubic root of 5605905638 is about 1776.4320269871.

The spelling of 5605905638 in words is "five billion, six hundred five million, nine hundred five thousand, six hundred thirty-eight".