12380665 has 16 divisors (see below), whose sum is σ = 16318656. Its totient is φ = 8942400.

The previous prime is 12380663. The next prime is 12380671. The reversal of 12380665 is 56608321.

It is not a de Polignac number, because 12380665 - 2¹ = 12380663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12380663) 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, 8275 + ... + 9655.

It is an arithmetic number, because the mean of its divisors is an integer number (1019916).

Almost surely, 2^12380665 is an apocalyptic number.

It is an amenable number.

12380665 is a deficient number, since it is larger than the sum of its proper divisors (3937991).

12380665 is a wasteful number, since it uses less digits than its factorization.

12380665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 12380665 is about 3518.6169157781. The cubic root of 12380665 is about 231.3385402374.

Adding to 12380665 its reverse (56608321), we get a palindrome (68988986).

The spelling of 12380665 in words is "twelve million, three hundred eighty thousand, six hundred sixty-five".