654923 has 2 divisors, whose sum is σ = 654924. Its totient is φ = 654922.

The previous prime is 654917. The next prime is 654931. The reversal of 654923 is 329456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654923 - 2¹⁰ = 653899 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (654943) 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 as a sum of consecutive naturals, namely, 327461 + 327462.

It is an arithmetic number, because the mean of its divisors is an integer number (327462).

2⁶⁵⁴⁹²³ is an apocalyptic number.

654923 is a deficient number, since it is larger than the sum of its proper divisors (1).

654923 is an equidigital number, since it uses as much as digits as its factorization.

654923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 29.

The square root of 654923 is about 809.2731306549. The cubic root of 654923 is about 86.8420527894.

The spelling of 654923 in words is "six hundred fifty-four thousand, nine hundred twenty-three".