654423 has 16 divisors (see below), whose sum is σ = 1088256. Its totient is φ = 339840.

The previous prime is 654421. The next prime is 654427. The reversal of 654423 is 324456.

It is not a de Polignac number, because 654423 - 2¹ = 654421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 654393 and 654402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654421) 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 15 ways as a sum of consecutive naturals, for example, 1186 + ... + 1647.

It is an arithmetic number, because the mean of its divisors is an integer number (68016).

2⁶⁵⁴⁴²³ is an apocalyptic number.

654423 is a deficient number, since it is larger than the sum of its proper divisors (433833).

654423 is a wasteful number, since it uses less digits than its factorization.

654423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854.

The product of its digits is 2880, while the sum is 24.

The square root of 654423 is about 808.9641524814. The cubic root of 654423 is about 86.8199473506.

Adding to 654423 its reverse (324456), we get a palindrome (978879).

The spelling of 654423 in words is "six hundred fifty-four thousand, four hundred twenty-three".