2168685017 has 4 divisors (see below), whose sum is σ = 2183240100. Its totient is φ = 2154129936.

The previous prime is 2168684977. The next prime is 2168685031. The reversal of 2168685017 is 7105868612.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 936604816 + 1232080201 = 30604^2 + 35101^2 .

It is a cyclic number.

It is not a de Polignac number, because 2168685017 - 2⁸ = 2168684761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2168685067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7277318 + ... + 7277615.

It is an arithmetic number, because the mean of its divisors is an integer number (545810025).

Almost surely, 2^2168685017 is an apocalyptic number.

It is an amenable number.

2168685017 is a deficient number, since it is larger than the sum of its proper divisors (14555083).

2168685017 is a wasteful number, since it uses less digits than its factorization.

2168685017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14555082.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 2168685017 is about 46569.1423262228. The cubic root of 2168685017 is about 1294.3910250735.

The spelling of 2168685017 in words is "two billion, one hundred sixty-eight million, six hundred eighty-five thousand, seventeen".