668192 has 48 divisors (see below), whose sum is σ = 1592640. Its totient is φ = 269568.

The previous prime is 668179. The next prime is 668201. The reversal of 668192 is 291866.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

668192 is an undulating number in base 12.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4178 + ... + 4334.

It is an arithmetic number, because the mean of its divisors is an integer number (33180).

2⁶⁶⁸¹⁹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796320).

668192 is an abundant number, since it is smaller than the sum of its proper divisors (924448).

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

668192 is a wasteful number, since it uses less digits than its factorization.

668192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 185 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 668192 is about 817.4301193374. The cubic root of 668192 is about 87.4246207955.

Adding to 668192 its product of digits (5184), we get a palindrome (673376).

The spelling of 668192 in words is "six hundred sixty-eight thousand, one hundred ninety-two".