655873 has 4 divisors (see below), whose sum is σ = 658260. Its totient is φ = 653488.

The previous prime is 655859. The next prime is 655883. The reversal of 655873 is 378556.

It is a happy number.

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 66049 + 589824 = 257^2 + 768^2 .

It is a cyclic number.

It is not a de Polignac number, because 655873 - 2¹⁷ = 524801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655883) 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, 718 + ... + 1351.

It is an arithmetic number, because the mean of its divisors is an integer number (164565).

2⁶⁵⁵⁸⁷³ is an apocalyptic number.

It is an amenable number.

655873 is a deficient number, since it is larger than the sum of its proper divisors (2387).

655873 is a wasteful number, since it uses less digits than its factorization.

655873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2386.

The product of its digits is 25200, while the sum is 34.

The square root of 655873 is about 809.8598644210. The cubic root of 655873 is about 86.8840221467.

The spelling of 655873 in words is "six hundred fifty-five thousand, eight hundred seventy-three".