12163665 has 16 divisors (see below), whose sum is σ = 20308608. Its totient is φ = 6205056.

The previous prime is 12163663. The next prime is 12163681. The reversal of 12163665 is 56636121.

12163665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12163665 - 2¹ = 12163663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12163661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17284 + ... + 17973.

It is an arithmetic number, because the mean of its divisors is an integer number (1269288).

Almost surely, 2^12163665 is an apocalyptic number.

12163665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12163665 is a deficient number, since it is larger than the sum of its proper divisors (8144943).

12163665 is a wasteful number, since it uses less digits than its factorization.

12163665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35288.

The product of its digits is 6480, while the sum is 30.

The square root of 12163665 is about 3487.6446206573. The cubic root of 12163665 is about 229.9789835869.

Adding to 12163665 its reverse (56636121), we get a palindrome (68799786).

The spelling of 12163665 in words is "twelve million, one hundred sixty-three thousand, six hundred sixty-five".