723023663 has 4 divisors (see below), whose sum is σ = 761077560. Its totient is φ = 684969768.

The previous prime is 723023597. The next prime is 723023669. The reversal of 723023663 is 366320327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366320327 = 137 ⋅2673871.

It is a cyclic number.

It is not a de Polignac number, because 723023663 - 2⁸ = 723023407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723023669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19026920 + ... + 19026957.

It is an arithmetic number, because the mean of its divisors is an integer number (190269390).

Almost surely, 2^723023663 is an apocalyptic number.

723023663 is a deficient number, since it is larger than the sum of its proper divisors (38053897).

723023663 is a wasteful number, since it uses less digits than its factorization.

723023663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38053896.

The product of its (nonzero) digits is 27216, while the sum is 32.

The square root of 723023663 is about 26889.0993341168. The cubic root of 723023663 is about 897.5338505711.

The spelling of 723023663 in words is "seven hundred twenty-three million, twenty-three thousand, six hundred sixty-three".