623543663 has 8 divisors (see below), whose sum is σ = 660694608. Its totient is φ = 586445184.

The previous prime is 623543659. The next prime is 623543681. The reversal of 623543663 is 366345326.

623543663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 623543663 - 2² = 623543659 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 (623503663) 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, 12845 + ... + 37577.

It is an arithmetic number, because the mean of its divisors is an integer number (82586826).

Almost surely, 2^623543663 is an apocalyptic number.

623543663 is a deficient number, since it is larger than the sum of its proper divisors (37150945).

623543663 is a wasteful number, since it uses less digits than its factorization.

623543663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26233.

The product of its digits is 233280, while the sum is 38.

The square root of 623543663 is about 24970.8562728634. The cubic root of 623543663 is about 854.3233765390.

Adding to 623543663 its reverse (366345326), we get a palindrome (989888989).

The spelling of 623543663 in words is "six hundred twenty-three million, five hundred forty-three thousand, six hundred sixty-three".