427667 has 4 divisors (see below), whose sum is σ = 428976. Its totient is φ = 426360.

The previous prime is 427621. The next prime is 427681. The reversal of 427667 is 766724.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 427667 - 2¹⁸ = 165523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427067) 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, 317 + ... + 977.

It is an arithmetic number, because the mean of its divisors is an integer number (107244).

2⁴²⁷⁶⁶⁷ is an apocalyptic number.

427667 is a deficient number, since it is larger than the sum of its proper divisors (1309).

427667 is an equidigital number, since it uses as much as digits as its factorization.

427667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308.

The product of its digits is 14112, while the sum is 32.

The square root of 427667 is about 653.9625371533. The cubic root of 427667 is about 75.3416707473.

The spelling of 427667 in words is "four hundred twenty-seven thousand, six hundred sixty-seven".