123663606 has 32 divisors (see below), whose sum is σ = 273518208. Its totient is φ = 36959040.

The previous prime is 123663581. The next prime is 123663623. The reversal of 123663606 is 606366321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8016 + ... + 17651.

It is an arithmetic number, because the mean of its divisors is an integer number (8547444).

Almost surely, 2^123663606 is an apocalyptic number.

123663606 is an abundant number, since it is smaller than the sum of its proper divisors (149854602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123663606 is a wasteful number, since it uses less digits than its factorization.

123663606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25756.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 123663606 is about 11120.4139311448. The cubic root of 123663606 is about 498.2117533055.

The spelling of 123663606 in words is "one hundred twenty-three million, six hundred sixty-three thousand, six hundred six".