2117585247 has 8 divisors (see below), whose sum is σ = 2824249344. Its totient is φ = 1411322328.

The previous prime is 2117585243. The next prime is 2117585287. The reversal of 2117585247 is 7425857112.

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

It is not a de Polignac number, because 2117585247 - 2² = 2117585243 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2117585199 and 2117585208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117585243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87753 + ... + 109250.

It is an arithmetic number, because the mean of its divisors is an integer number (353031168).

Almost surely, 2^2117585247 is an apocalyptic number.

2117585247 is a deficient number, since it is larger than the sum of its proper divisors (706664097).

2117585247 is a wasteful number, since it uses less digits than its factorization.

2117585247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200589.

The product of its digits is 156800, while the sum is 42.

The square root of 2117585247 is about 46017.2277196269. The cubic root of 2117585247 is about 1284.1437258441.

The spelling of 2117585247 in words is "two billion, one hundred seventeen million, five hundred eighty-five thousand, two hundred forty-seven".