789663 has 16 divisors (see below), whose sum is σ = 1243136. Its totient is φ = 436320.

The previous prime is 789653. The next prime is 789671. The reversal of 789663 is 366987.

789663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 789663 - 2⁵ = 789631 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 789663.

It is not an unprimeable number, because it can be changed into a prime (789623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45 + ... + 1257.

It is an arithmetic number, because the mean of its divisors is an integer number (77696).

2⁷⁸⁹⁶⁶³ is an apocalyptic number.

789663 is a deficient number, since it is larger than the sum of its proper divisors (453473).

789663 is a wasteful number, since it uses less digits than its factorization.

789663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254.

The product of its digits is 54432, while the sum is 39.

The square root of 789663 is about 888.6298441984. The cubic root of 789663 is about 92.4302078852.

The spelling of 789663 in words is "seven hundred eighty-nine thousand, six hundred sixty-three".