427663 has 4 divisors (see below), whose sum is σ = 442440. Its totient is φ = 412888.

The previous prime is 427621. The next prime is 427681. The reversal of 427663 is 366724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 427663 - 2⁹ = 427151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428663) 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, 7345 + ... + 7402.

It is an arithmetic number, because the mean of its divisors is an integer number (110610).

2⁴²⁷⁶⁶³ is an apocalyptic number.

427663 is a deficient number, since it is larger than the sum of its proper divisors (14777).

427663 is a wasteful number, since it uses less digits than its factorization.

427663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14776.

The product of its digits is 6048, while the sum is 28.

The square root of 427663 is about 653.9594788670. The cubic root of 427663 is about 75.3414358546.

The spelling of 427663 in words is "four hundred twenty-seven thousand, six hundred sixty-three".