427641 has 4 divisors (see below), whose sum is σ = 570192. Its totient is φ = 285092.

The previous prime is 427621. The next prime is 427681. The reversal of 427641 is 146724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 427641 - 2⁷ = 427513 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (427621) 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, 71271 + ... + 71276.

It is an arithmetic number, because the mean of its divisors is an integer number (142548).

2⁴²⁷⁶⁴¹ is an apocalyptic number.

It is an amenable number.

427641 is a deficient number, since it is larger than the sum of its proper divisors (142551).

427641 is a wasteful number, since it uses less digits than its factorization.

427641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142550.

The product of its digits is 1344, while the sum is 24.

The square root of 427641 is about 653.9426580366. The cubic root of 427641 is about 75.3401439183.

The spelling of 427641 in words is "four hundred twenty-seven thousand, six hundred forty-one".