426636 has 36 divisors (see below), whose sum is σ = 1233232. Its totient is φ = 121824.

The previous prime is 426631. The next prime is 426637. The reversal of 426636 is 636624.

426636 is a `hidden beast` number, since 4 + 26 + 636 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (426631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 595 + ... + 1098.

2⁴²⁶⁶³⁶ is an apocalyptic number.

It is an amenable number.

426636 is an abundant number, since it is smaller than the sum of its proper divisors (806596).

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

426636 is a wasteful number, since it uses less digits than its factorization.

426636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710 (or 1705 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 426636 is about 653.1737900437. The cubic root of 426636 is about 75.2810786149.

The spelling of 426636 in words is "four hundred twenty-six thousand, six hundred thirty-six".