427687 has 8 divisors (see below), whose sum is σ = 465696. Its totient is φ = 390432.

The previous prime is 427681. The next prime is 427711. The reversal of 427687 is 786724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427687 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 (427681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2073 + ... + 2269.

It is an arithmetic number, because the mean of its divisors is an integer number (58212).

2⁴²⁷⁶⁸⁷ is an apocalyptic number.

427687 is a deficient number, since it is larger than the sum of its proper divisors (38009).

427687 is a wasteful number, since it uses less digits than its factorization.

427687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377.

The product of its digits is 18816, while the sum is 34.

The square root of 427687 is about 653.9778283704. The cubic root of 427687 is about 75.3428451891.

The spelling of 427687 in words is "four hundred twenty-seven thousand, six hundred eighty-seven".