123613663 has 2 divisors, whose sum is σ = 123613664. Its totient is φ = 123613662.

The previous prime is 123613621. The next prime is 123613667. The reversal of 123613663 is 366316321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123613663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123613667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61806831 + 61806832.

It is an arithmetic number, because the mean of its divisors is an integer number (61806832).

Almost surely, 2^123613663 is an apocalyptic number.

123613663 is a deficient number, since it is larger than the sum of its proper divisors (1).

123613663 is an equidigital number, since it uses as much as digits as its factorization.

123613663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 31.

The square root of 123613663 is about 11118.1681494750. The cubic root of 123613663 is about 498.1446747181.

Adding to 123613663 its reverse (366316321), we get a palindrome (489929984).

The spelling of 123613663 in words is "one hundred twenty-three million, six hundred thirteen thousand, six hundred sixty-three".