556723 has 2 divisors, whose sum is σ = 556724. Its totient is φ = 556722.

The previous prime is 556709. The next prime is 556727. The reversal of 556723 is 327655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556723 - 2⁵ = 556691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556691 and 556700.

It is not a weakly prime, because it can be changed into another prime (556727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278361 + 278362.

It is an arithmetic number, because the mean of its divisors is an integer number (278362).

2⁵⁵⁶⁷²³ is an apocalyptic number.

556723 is a deficient number, since it is larger than the sum of its proper divisors (1).

556723 is an equidigital number, since it uses as much as digits as its factorization.

556723 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 556723 is about 746.1387270475. The cubic root of 556723 is about 82.2646121679.

The spelling of 556723 in words is "five hundred fifty-six thousand, seven hundred twenty-three".