666104311 has 4 divisors (see below), whose sum is σ = 695065392. Its totient is φ = 637143232.

The previous prime is 666104297. The next prime is 666104339. The reversal of 666104311 is 113401666.

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

It is a cyclic number.

It is not a de Polignac number, because 666104311 - 2⁵ = 666104279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 666104311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666104611) 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, 14480506 + ... + 14480551.

It is an arithmetic number, because the mean of its divisors is an integer number (173766348).

Almost surely, 2^666104311 is an apocalyptic number.

666104311 is a deficient number, since it is larger than the sum of its proper divisors (28961081).

666104311 is a wasteful number, since it uses less digits than its factorization.

666104311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28961080.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 666104311 is about 25808.9967065750. The cubic root of 666104311 is about 873.3347641755.

Adding to 666104311 its reverse (113401666), we get a palindrome (779505977).

The spelling of 666104311 in words is "six hundred sixty-six million, one hundred four thousand, three hundred eleven".