663456023 has 4 divisors (see below), whose sum is σ = 664988688. Its totient is φ = 661923360.

The previous prime is 663455993. The next prime is 663456029. The reversal of 663456023 is 320654366.

663456023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 663456023 - 2⁶ = 663455959 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 (663456029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765683 + ... + 766548.

It is an arithmetic number, because the mean of its divisors is an integer number (166247172).

Almost surely, 2^663456023 is an apocalyptic number.

663456023 is a deficient number, since it is larger than the sum of its proper divisors (1532665).

663456023 is a wasteful number, since it uses less digits than its factorization.

663456023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532664.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 663456023 is about 25757.6400898840. The cubic root of 663456023 is about 872.1758296326.

The spelling of 663456023 in words is "six hundred sixty-three million, four hundred fifty-six thousand, twenty-three".