723036789 has 6 divisors (see below), whose sum is σ = 1044386486. Its totient is φ = 482024520.

The previous prime is 723036779. The next prime is 723036793. The reversal of 723036789 is 987630327.

It is a happy number.

723036789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 701720100 + 21316689 = 26490^2 + 4617^2 .

It is not a de Polignac number, because 723036789 - 2⁷ = 723036661 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723036709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40168702 + ... + 40168719.

Almost surely, 2^723036789 is an apocalyptic number.

It is an amenable number.

723036789 is a deficient number, since it is larger than the sum of its proper divisors (321349697).

723036789 is a wasteful number, since it uses less digits than its factorization.

723036789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80337427 (or 80337424 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 723036789 is about 26889.3434096112. The cubic root of 723036789 is about 897.5392819092.

The spelling of 723036789 in words is "seven hundred twenty-three million, thirty-six thousand, seven hundred eighty-nine".