668109127 has 8 divisors (see below), whose sum is σ = 768238976. Its totient is φ = 569150712.

The previous prime is 668109119. The next prime is 668109137. The reversal of 668109127 is 721901866.

668109127 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 668109127 - 2³ = 668109119 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 668109127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668109107) 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, 291633 + ... + 293914.

It is an arithmetic number, because the mean of its divisors is an integer number (96029872).

Almost surely, 2^668109127 is an apocalyptic number.

668109127 is a deficient number, since it is larger than the sum of its proper divisors (100129849).

668109127 is a wasteful number, since it uses less digits than its factorization.

668109127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585717.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 668109127 is about 25847.8070056243. The cubic root of 668109127 is about 874.2100634530.

The spelling of 668109127 in words is "six hundred sixty-eight million, one hundred nine thousand, one hundred twenty-seven".