12645697 has 4 divisors (see below), whose sum is σ = 13311280. Its totient is φ = 11980116.

The previous prime is 12645667. The next prime is 12645707. The reversal of 12645697 is 79654621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12645697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12645667) 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, 332763 + ... + 332800.

It is an arithmetic number, because the mean of its divisors is an integer number (3327820).

Almost surely, 2^12645697 is an apocalyptic number.

It is an amenable number.

12645697 is a deficient number, since it is larger than the sum of its proper divisors (665583).

12645697 is an equidigital number, since it uses as much as digits as its factorization.

12645697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665582.

The product of its digits is 90720, while the sum is 40.

The square root of 12645697 is about 3556.0788798900. The cubic root of 12645697 is about 232.9776483314.

The spelling of 12645697 in words is "twelve million, six hundred forty-five thousand, six hundred ninety-seven".