668055 has 8 divisors (see below), whose sum is σ = 1068912. Its totient is φ = 356288.

The previous prime is 668051. The next prime is 668069. The reversal of 668055 is 550866.

668055 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 668055 - 2² = 668051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668051) 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, 22254 + ... + 22283.

It is an arithmetic number, because the mean of its divisors is an integer number (133614).

2⁶⁶⁸⁰⁵⁵ is an apocalyptic number.

668055 is a deficient number, since it is larger than the sum of its proper divisors (400857).

668055 is a wasteful number, since it uses less digits than its factorization.

668055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44545.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 668055 is about 817.3463158295. The cubic root of 668055 is about 87.4186454712.

The spelling of 668055 in words is "six hundred sixty-eight thousand, fifty-five".