427644 has 36 divisors (see below), whose sum is σ = 1236144. Its totient is φ = 122112.

The previous prime is 427621. The next prime is 427681. The reversal of 427644 is 446724.

427644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 597 + ... + 1100.

2⁴²⁷⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

427644 is an abundant number, since it is smaller than the sum of its proper divisors (808500).

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

427644 is a wasteful number, since it uses less digits than its factorization.

427644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714 (or 1709 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 427644 is about 653.9449518117. The cubic root of 427644 is about 75.3403200941.

The spelling of 427644 in words is "four hundred twenty-seven thousand, six hundred forty-four".