423668 has 12 divisors (see below), whose sum is σ = 847392. Its totient is φ = 181560.

The previous prime is 423667. The next prime is 423697. The reversal of 423668 is 866324.

423668 is an admirable number.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 423668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423667) 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, 7538 + ... + 7593.

It is an arithmetic number, because the mean of its divisors is an integer number (70616).

2⁴²³⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

423668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

423668 is a wasteful number, since it uses less digits than its factorization.

423668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15142 (or 15140 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 423668 is about 650.8978414467. The cubic root of 423668 is about 75.1061016802.

The spelling of 423668 in words is "four hundred twenty-three thousand, six hundred sixty-eight".