123611663 has 24 divisors (see below), whose sum is σ = 156280320. Its totient is φ = 97115760.

The previous prime is 123611647. The next prime is 123611669. The reversal of 123611663 is 366116321.

It is a happy number.

It is not a de Polignac number, because 123611663 - 2⁴ = 123611647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123611669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26720 + ... + 31002.

It is an arithmetic number, because the mean of its divisors is an integer number (6511680).

Almost surely, 2^123611663 is an apocalyptic number.

123611663 is a deficient number, since it is larger than the sum of its proper divisors (32668657).

123611663 is a wasteful number, since it uses less digits than its factorization.

123611663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4347 (or 4340 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 123611663 is about 11118.0782062369. The cubic root of 123611663 is about 498.1419881362.

Adding to 123611663 its reverse (366116321), we get a palindrome (489727984).

The spelling of 123611663 in words is "one hundred twenty-three million, six hundred eleven thousand, six hundred sixty-three".