723559 has 2 divisors, whose sum is σ = 723560. Its totient is φ = 723558.

The previous prime is 723553. The next prime is 723563. The reversal of 723559 is 955327.

It is a happy number.

723559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 723559 - 2³ = 723551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 723559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361779 + 361780.

It is an arithmetic number, because the mean of its divisors is an integer number (361780).

2⁷²³⁵⁵⁹ is an apocalyptic number.

723559 is a deficient number, since it is larger than the sum of its proper divisors (1).

723559 is an equidigital number, since it uses as much as digits as its factorization.

723559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 31.

The square root of 723559 is about 850.6227130755. The cubic root of 723559 is about 89.7755311530.

The spelling of 723559 in words is "seven hundred twenty-three thousand, five hundred fifty-nine".