12688395 has 8 divisors (see below), whose sum is σ = 20301456. Its totient is φ = 6767136.

The previous prime is 12688391. The next prime is 12688411. The reversal of 12688395 is 59388621.

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

It is not a de Polignac number, because 12688395 - 2² = 12688391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12688391) 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, 422932 + ... + 422961.

It is an arithmetic number, because the mean of its divisors is an integer number (2537682).

Almost surely, 2^12688395 is an apocalyptic number.

12688395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12688395 is a deficient number, since it is larger than the sum of its proper divisors (7613061).

12688395 is an equidigital number, since it uses as much as digits as its factorization.

12688395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845901.

The product of its digits is 103680, while the sum is 42.

The square root of 12688395 is about 3562.0773433490. The cubic root of 12688395 is about 233.2395689020.

The spelling of 12688395 in words is "twelve million, six hundred eighty-eight thousand, three hundred ninety-five".