668848 has 20 divisors (see below), whose sum is σ = 1372680. Its totient is φ = 314624.

The previous prime is 668821. The next prime is 668851. The reversal of 668848 is 848866.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 668848.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958 + ... + 1501.

It is an arithmetic number, because the mean of its divisors is an integer number (68634).

2⁶⁶⁸⁸⁴⁸ is an apocalyptic number.

668848 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

668848 is an abundant number, since it is smaller than the sum of its proper divisors (703832).

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

668848 is a wasteful number, since it uses less digits than its factorization.

668848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484 (or 2478 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 668848 is about 817.8312784432. The cubic root of 668848 is about 87.4532212544.

The spelling of 668848 in words is "six hundred sixty-eight thousand, eight hundred forty-eight".