423618 has 16 divisors (see below), whose sum is σ = 912576. Its totient is φ = 130320.

The previous prime is 423617. The next prime is 423649. The reversal of 423618 is 816324.

It is a happy number.

423618 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 423618.

It is not an unprimeable number, because it can be changed into a prime (423617) 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, 2638 + ... + 2793.

It is an arithmetic number, because the mean of its divisors is an integer number (57036).

2⁴²³⁶¹⁸ is an apocalyptic number.

423618 is an abundant number, since it is smaller than the sum of its proper divisors (488958).

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

423618 is a wasteful number, since it uses less digits than its factorization.

423618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449.

The product of its digits is 1152, while the sum is 24.

The square root of 423618 is about 650.8594318284. The cubic root of 423618 is about 75.1031469666.

The spelling of 423618 in words is "four hundred twenty-three thousand, six hundred eighteen".