655723 has 2 divisors, whose sum is σ = 655724. Its totient is φ = 655722.

The previous prime is 655717. The next prime is 655727. The reversal of 655723 is 327556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655723 - 2⁹ = 655211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 655691 and 655700.

It is not a weakly prime, because it can be changed into another prime (655727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327861 + 327862.

It is an arithmetic number, because the mean of its divisors is an integer number (327862).

2⁶⁵⁵⁷²³ is an apocalyptic number.

655723 is a deficient number, since it is larger than the sum of its proper divisors (1).

655723 is an equidigital number, since it uses as much as digits as its factorization.

655723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 28.

The square root of 655723 is about 809.7672505109. The cubic root of 655723 is about 86.8773981016.

It can be divided in two parts, 655 and 723, that added together give a triangular number (1378 = T₅₂).

The spelling of 655723 in words is "six hundred fifty-five thousand, seven hundred twenty-three".