668063 has 4 divisors (see below), whose sum is σ = 728808. Its totient is φ = 607320.

The previous prime is 668051. The next prime is 668069. The reversal of 668063 is 360866.

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 668063 - 2⁴ = 668047 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30356 + ... + 30377.

It is an arithmetic number, because the mean of its divisors is an integer number (182202).

2⁶⁶⁸⁰⁶³ is an apocalyptic number.

668063 is a deficient number, since it is larger than the sum of its proper divisors (60745).

668063 is a wasteful number, since it uses less digits than its factorization.

668063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60744.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 668063 is about 817.3512097012. The cubic root of 668063 is about 87.4189944177.

The spelling of 668063 in words is "six hundred sixty-eight thousand, sixty-three".