668017110 has 64 divisors (see below), whose sum is σ = 1642954752. Its totient is φ = 173751936.

The previous prime is 668017099. The next prime is 668017111. The reversal of 668017110 is 11710866.

It is a happy number.

668017110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668017111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 539412 + ... + 540648.

It is an arithmetic number, because the mean of its divisors is an integer number (25671168).

Almost surely, 2^668017110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668017110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821477376).

668017110 is an abundant number, since it is smaller than the sum of its proper divisors (974937642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668017110 is a wasteful number, since it uses less digits than its factorization.

668017110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 668017110 is about 25846.0269674084. The cubic root of 668017110 is about 874.1699273547.

Adding to 668017110 its reverse (11710866), we get a palindrome (679727976).

The spelling of 668017110 in words is "six hundred sixty-eight million, seventeen thousand, one hundred ten".