723968653 has 2 divisors, whose sum is σ = 723968654. Its totient is φ = 723968652.

The previous prime is 723968633. The next prime is 723968659. The reversal of 723968653 is 356869327.

It is a happy number.

723968653 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 can be written as a sum of positive squares in only one way, i.e., 611226729 + 112741924 = 24723^2 + 10618^2 .

It is an emirp because it is prime and its reverse (356869327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723968653 - 2⁵ = 723968621 is a prime.

It is a super-2 number, since 2×723968653² = 1048261221053268818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 723968597 and 723968606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723968659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361984326 + 361984327.

It is an arithmetic number, because the mean of its divisors is an integer number (361984327).

Almost surely, 2^723968653 is an apocalyptic number.

It is an amenable number.

723968653 is a deficient number, since it is larger than the sum of its proper divisors (1).

723968653 is an equidigital number, since it uses as much as digits as its factorization.

723968653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 49.

The square root of 723968653 is about 26906.6655868021. The cubic root of 723968653 is about 897.9247051219.

The spelling of 723968653 in words is "seven hundred twenty-three million, nine hundred sixty-eight thousand, six hundred fifty-three".