123663623 has 2 divisors, whose sum is σ = 123663624. Its totient is φ = 123663622.

The previous prime is 123663581. The next prime is 123663629. The reversal of 123663623 is 326366321.

It is a strong prime.

It is an emirp because it is prime and its reverse (326366321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123663623 - 2¹⁰ = 123662599 is a prime.

It is a super-2 number, since 2×123663623² = 30585383306972258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123663623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123663629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61831811 + 61831812.

It is an arithmetic number, because the mean of its divisors is an integer number (61831812).

Almost surely, 2^123663623 is an apocalyptic number.

123663623 is a deficient number, since it is larger than the sum of its proper divisors (1).

123663623 is an equidigital number, since it uses as much as digits as its factorization.

123663623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 32.

The square root of 123663623 is about 11120.4146955048. The cubic root of 123663623 is about 498.2117761352.

The spelling of 123663623 in words is "one hundred twenty-three million, six hundred sixty-three thousand, six hundred twenty-three".