12661395 has 8 divisors (see below), whose sum is σ = 20258256. Its totient is φ = 6752736.

The previous prime is 12661381. The next prime is 12661399. The reversal of 12661395 is 59316621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12661395 - 2¹³ = 12653203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12661399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422032 + ... + 422061.

It is an arithmetic number, because the mean of its divisors is an integer number (2532282).

Almost surely, 2^12661395 is an apocalyptic number.

12661395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12661395 is a deficient number, since it is larger than the sum of its proper divisors (7596861).

12661395 is an equidigital number, since it uses as much as digits as its factorization.

12661395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844101.

The product of its digits is 9720, while the sum is 33.

The square root of 12661395 is about 3558.2854017068. The cubic root of 12661395 is about 233.0740123573.

The spelling of 12661395 in words is "twelve million, six hundred sixty-one thousand, three hundred ninety-five".