655427 has 4 divisors (see below), whose sum is σ = 657360. Its totient is φ = 653496.

The previous prime is 655399. The next prime is 655439. The reversal of 655427 is 724556.

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 655427 - 2¹² = 651331 is a prime.

It is a d-powerful number, because it can be written as 6³ + 5² + 4² + 5⁸ + 2¹⁸ + 7⁴ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 655427.

It is not an unprimeable number, because it can be changed into a prime (655727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308 + ... + 1185.

It is an arithmetic number, because the mean of its divisors is an integer number (164340).

2⁶⁵⁵⁴²⁷ is an apocalyptic number.

655427 is a deficient number, since it is larger than the sum of its proper divisors (1933).

655427 is a wasteful number, since it uses less digits than its factorization.

655427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932.

The product of its digits is 8400, while the sum is 29.

The square root of 655427 is about 809.5844613133. The cubic root of 655427 is about 86.8643236884.

The spelling of 655427 in words is "six hundred fifty-five thousand, four hundred twenty-seven".