668049 has 8 divisors (see below), whose sum is σ = 943200. Its totient is φ = 419136.

The previous prime is 668047. The next prime is 668051. The reversal of 668049 is 940866.

It is an interprime number because it is at equal distance from previous prime (668047) and next prime (668051).

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

It is not a de Polignac number, because 668049 - 2¹ = 668047 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (668047) 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, 6499 + ... + 6600.

It is an arithmetic number, because the mean of its divisors is an integer number (117900).

2⁶⁶⁸⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

668049 is a deficient number, since it is larger than the sum of its proper divisors (275151).

668049 is a wasteful number, since it uses less digits than its factorization.

668049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13119.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 668049 is about 817.3426454064. The cubic root of 668049 is about 87.4183837595.

The spelling of 668049 in words is "six hundred sixty-eight thousand, forty-nine".