427668 has 24 divisors (see below), whose sum is σ = 1008672. Its totient is φ = 141024.

The previous prime is 427621. The next prime is 427681. The reversal of 427668 is 866724.

It is a congruent number.

It is an unprimeable number.

427668 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1771 + ... + 1997.

It is an arithmetic number, because the mean of its divisors is an integer number (42028).

2⁴²⁷⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

427668 is an abundant number, since it is smaller than the sum of its proper divisors (581004).

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

427668 is a wasteful number, since it uses less digits than its factorization.

427668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 389 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 427668 is about 653.9633017227. The cubic root of 427668 is about 75.3417294703.

It can be divided in two parts, 4 and 27668, that added together give a palindrome (27672).

The spelling of 427668 in words is "four hundred twenty-seven thousand, six hundred sixty-eight".