723997756 has 12 divisors (see below), whose sum is σ = 1267519792. Its totient is φ = 361849248.

The previous prime is 723997741. The next prime is 723997787. The reversal of 723997756 is 657799327.

It is a happy number.

723997756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 723997697 and 723997706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26145 + ... + 46168.

Almost surely, 2^723997756 is an apocalyptic number.

It is an amenable number.

723997756 is a deficient number, since it is larger than the sum of its proper divisors (543522036).

723997756 is a wasteful number, since it uses less digits than its factorization.

723997756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74820 (or 74818 counting only the distinct ones).

The product of its digits is 5000940, while the sum is 55.

The square root of 723997756 is about 26907.2063953135. The cubic root of 723997756 is about 897.9367369285.

The spelling of 723997756 in words is "seven hundred twenty-three million, nine hundred ninety-seven thousand, seven hundred fifty-six".