668011 has 8 divisors (see below), whose sum is σ = 696384. Its totient is φ = 640320.

The previous prime is 668009. The next prime is 668029. The reversal of 668011 is 110866.

668011 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 668011 - 2¹ = 668009 is a prime.

It is a super-2 number, since 2×668011² = 892477392242, which contains 22 as substring.

It is a Duffinian 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, 2751 + ... + 2983.

It is an arithmetic number, because the mean of its divisors is an integer number (87048).

2⁶⁶⁸⁰¹¹ is an apocalyptic number.

668011 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

668011 is a deficient number, since it is larger than the sum of its proper divisors (28373).

668011 is a wasteful number, since it uses less digits than its factorization.

668011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 668011 is about 817.3193990112. The cubic root of 668011 is about 87.4167262156.

Adding to 668011 its reverse (110866), we get a palindrome (778877).

The spelling of 668011 in words is "six hundred sixty-eight thousand, eleven".