723089 has 2 divisors, whose sum is σ = 723090. Its totient is φ = 723088.

The previous prime is 723071. The next prime is 723101. The reversal of 723089 is 980327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 652864 + 70225 = 808^2 + 265^2 .

It is an emirp because it is prime and its reverse (980327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723089 - 2⁸ = 722833 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (723029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361544 + 361545.

It is an arithmetic number, because the mean of its divisors is an integer number (361545).

2⁷²³⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

723089 is a deficient number, since it is larger than the sum of its proper divisors (1).

723089 is an equidigital number, since it uses as much as digits as its factorization.

723089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 723089 is about 850.3464000041. The cubic root of 723089 is about 89.7560885372.

The spelling of 723089 in words is "seven hundred twenty-three thousand, eighty-nine".