12148865 has 4 divisors (see below), whose sum is σ = 14578644. Its totient is φ = 9719088.

The previous prime is 12148861. The next prime is 12148891. The reversal of 12148865 is 56884121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56884121 = 7 ⋅8126303.

It can be written as a sum of positive squares in 2 ways, for example, as 4032064 + 8116801 = 2008^2 + 2849^2 .

It is a cyclic number.

It is not a de Polignac number, because 12148865 - 2² = 12148861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12148861) 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, 1214882 + ... + 1214891.

It is an arithmetic number, because the mean of its divisors is an integer number (3644661).

Almost surely, 2^12148865 is an apocalyptic number.

It is an amenable number.

12148865 is a deficient number, since it is larger than the sum of its proper divisors (2429779).

12148865 is an equidigital number, since it uses as much as digits as its factorization.

12148865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429778.

The product of its digits is 15360, while the sum is 35.

The square root of 12148865 is about 3485.5221990399. The cubic root of 12148865 is about 229.8856709667.

It can be divided in two parts, 12 and 148865, that added together give a cube (148877 = 53³).

The spelling of 12148865 in words is "twelve million, one hundred forty-eight thousand, eight hundred sixty-five".