723859 has 2 divisors, whose sum is σ = 723860. Its totient is φ = 723858.

The previous prime is 723857. The next prime is 723893. The reversal of 723859 is 958327.

723859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (723893) can be obtained adding 723859 to its sum of digits (34).

It is a weak prime.

It is an emirp because it is prime and its reverse (958327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723859 - 2¹ = 723857 is a prime.

Together with 723857, it forms a pair of twin primes.

723859 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (723851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361929 + 361930.

It is an arithmetic number, because the mean of its divisors is an integer number (361930).

2⁷²³⁸⁵⁹ is an apocalyptic number.

723859 is a deficient number, since it is larger than the sum of its proper divisors (1).

723859 is an equidigital number, since it uses as much as digits as its factorization.

723859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 723859 is about 850.7990362007. The cubic root of 723859 is about 89.7879369315.

The spelling of 723859 in words is "seven hundred twenty-three thousand, eight hundred fifty-nine".