426618 has 24 divisors (see below), whose sum is σ = 936468. Its totient is φ = 140352.

The previous prime is 426611. The next prime is 426631. The reversal of 426618 is 816624.

426618 is a `hidden beast` number, since 42 + 6 + 618 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 393129 + 33489 = 627^2 + 183^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 426591 and 426600.

It is not an unprimeable number, because it can be changed into a prime (426611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2380 + ... + 2552.

2⁴²⁶⁶¹⁸ is an apocalyptic number.

426618 is an abundant number, since it is smaller than the sum of its proper divisors (509850).

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

426618 is a wasteful number, since it uses less digits than its factorization.

426618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 315 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 426618 is about 653.1600110233. The cubic root of 426618 is about 75.2800198837.

The spelling of 426618 in words is "four hundred twenty-six thousand, six hundred eighteen".