668341 has 4 divisors (see below), whose sum is σ = 684684. Its totient is φ = 652000.

The previous prime is 668303. The next prime is 668347. The reversal of 668341 is 143866.

668341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 143866 = 2 ⋅71933.

It can be written as a sum of positive squares in 2 ways, for example, as 271441 + 396900 = 521^2 + 630^2 .

It is a cyclic number.

It is not a de Polignac number, because 668341 - 2⁹ = 667829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668347) 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, 8110 + ... + 8191.

It is an arithmetic number, because the mean of its divisors is an integer number (171171).

2⁶⁶⁸³⁴¹ is an apocalyptic number.

It is an amenable number.

668341 is a deficient number, since it is larger than the sum of its proper divisors (16343).

668341 is a wasteful number, since it uses less digits than its factorization.

668341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16342.

The product of its digits is 3456, while the sum is 28.

The square root of 668341 is about 817.5212535464. The cubic root of 668341 is about 87.4311185788.

It can be divided in two parts, 6683 and 41, that added together give a square (6724 = 82²).

The spelling of 668341 in words is "six hundred sixty-eight thousand, three hundred forty-one".