12173663 has 4 divisors (see below), whose sum is σ = 12327840. Its totient is φ = 12019488.

The previous prime is 12173657. The next prime is 12173671. The reversal of 12173663 is 36637121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12173663 - 2⁶ = 12173599 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 (12173653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76970 + ... + 77127.

It is an arithmetic number, because the mean of its divisors is an integer number (3081960).

Almost surely, 2^12173663 is an apocalyptic number.

12173663 is a deficient number, since it is larger than the sum of its proper divisors (154177).

12173663 is an equidigital number, since it uses as much as digits as its factorization.

12173663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154176.

The product of its digits is 4536, while the sum is 29.

The square root of 12173663 is about 3489.0776718210. The cubic root of 12173663 is about 230.0419772154.

The spelling of 12173663 in words is "twelve million, one hundred seventy-three thousand, six hundred sixty-three".