427657 has 4 divisors (see below), whose sum is σ = 435780. Its totient is φ = 419536.

The previous prime is 427621. The next prime is 427681. The reversal of 427657 is 756724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 109561 + 318096 = 331^2 + 564^2 .

It is a cyclic number.

It is not a de Polignac number, because 427657 - 2⁷ = 427529 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427457) 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, 3982 + ... + 4087.

It is an arithmetic number, because the mean of its divisors is an integer number (108945).

2⁴²⁷⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

427657 is a deficient number, since it is larger than the sum of its proper divisors (8123).

427657 is an equidigital number, since it uses as much as digits as its factorization.

427657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8122.

The product of its digits is 11760, while the sum is 31.

The square root of 427657 is about 653.9548914107. The cubic root of 427657 is about 75.3410835127.

The spelling of 427657 in words is "four hundred twenty-seven thousand, six hundred fifty-seven".