668148 has 24 divisors (see below), whose sum is σ = 1679328. Its totient is φ = 205536.

The previous prime is 668141. The next prime is 668153. The reversal of 668148 is 841866.

668148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 668148.

It is not an unprimeable number, because it can be changed into a prime (668141) 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, 1986 + ... + 2297.

It is an arithmetic number, because the mean of its divisors is an integer number (69972).

2⁶⁶⁸¹⁴⁸ is an apocalyptic number.

It is an amenable number.

668148 is an abundant number, since it is smaller than the sum of its proper divisors (1011180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668148 is a wasteful number, since it uses less digits than its factorization.

668148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303 (or 4301 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 668148 is about 817.4032052788. The cubic root of 668148 is about 87.4227018023.

The spelling of 668148 in words is "six hundred sixty-eight thousand, one hundred forty-eight".