655123 has 8 divisors (see below), whose sum is σ = 773120. Its totient is φ = 543240.

The previous prime is 655121. The next prime is 655157. The reversal of 655123 is 321556.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 655123 - 2¹ = 655121 is a prime.

It is a super-2 number, since 2×655123² = 858372290258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655094 and 655103.

It is not an unprimeable number, because it can be changed into a prime (655121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1293 + ... + 1726.

It is an arithmetic number, because the mean of its divisors is an integer number (96640).

2⁶⁵⁵¹²³ is an apocalyptic number.

655123 is a deficient number, since it is larger than the sum of its proper divisors (117997).

655123 is a wasteful number, since it uses less digits than its factorization.

655123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057.

The product of its digits is 900, while the sum is 22.

The square root of 655123 is about 809.3966888986. The cubic root of 655123 is about 86.8508918147.

Adding to 655123 its reverse (321556), we get a palindrome (976679).

The spelling of 655123 in words is "six hundred fifty-five thousand, one hundred twenty-three".