12396665 has 16 divisors (see below), whose sum is σ = 15439248. Its totient is φ = 9547776.

The previous prime is 12396653. The next prime is 12396677. The reversal of 12396665 is 56669321.

It is an interprime number because it is at equal distance from previous prime (12396653) and next prime (12396677).

It can be written as a sum of positive squares in 8 ways, for example, as 153664 + 12243001 = 392^2 + 3499^2 .

It is not a de Polignac number, because 12396665 - 2⁸ = 12396409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20609 + ... + 21201.

It is an arithmetic number, because the mean of its divisors is an integer number (964953).

Almost surely, 2^12396665 is an apocalyptic number.

It is an amenable number.

12396665 is a deficient number, since it is larger than the sum of its proper divisors (3042583).

12396665 is a wasteful number, since it uses less digits than its factorization.

12396665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748.

The product of its digits is 58320, while the sum is 38.

The square root of 12396665 is about 3520.8898023085. The cubic root of 12396665 is about 231.4381531767.

The spelling of 12396665 in words is "twelve million, three hundred ninety-six thousand, six hundred sixty-five".