663123013 has 8 divisors (see below), whose sum is σ = 762236928. Its totient is φ = 565104624.

The previous prime is 663123011. The next prime is 663123023. The reversal of 663123013 is 310321366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 663123013 - 2¹ = 663123011 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 (663123011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272581 + ... + 275002.

It is an arithmetic number, because the mean of its divisors is an integer number (95279616).

Almost surely, 2^663123013 is an apocalyptic number.

It is an amenable number.

663123013 is a deficient number, since it is larger than the sum of its proper divisors (99113915).

663123013 is a wasteful number, since it uses less digits than its factorization.

663123013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547763.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 663123013 is about 25751.1749829013. The cubic root of 663123013 is about 872.0298808077.

Adding to 663123013 its reverse (310321366), we get a palindrome (973444379).

The spelling of 663123013 in words is "six hundred sixty-three million, one hundred twenty-three thousand, thirteen".