123668 has 12 divisors (see below), whose sum is σ = 221760. Its totient is φ = 60312.

The previous prime is 123667. The next prime is 123677. The reversal of 123668 is 866321.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188 + ... + 531.

It is an arithmetic number, because the mean of its divisors is an integer number (18480).

2¹²³⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

123668 is a deficient number, since it is larger than the sum of its proper divisors (98092).

123668 is a wasteful number, since it uses less digits than its factorization.

123668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766 (or 764 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 123668 is about 351.6646129482. The cubic root of 123668 is about 49.8217654035.

Adding to 123668 its reverse (866321), we get a palindrome (989989).

It can be divided in two parts, 1236 and 68, that multiplied together give a palindrome (84048).

The spelling of 123668 in words is "one hundred twenty-three thousand, six hundred sixty-eight".