12694445 has 8 divisors (see below), whose sum is σ = 15448320. Its totient is φ = 10012240.

The previous prime is 12694439. The next prime is 12694447. The reversal of 12694445 is 54449621.

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

It is not a de Polignac number, because 12694445 - 2²⁰ = 11645869 is a prime.

It is a super-2 number, since 2×12694445² = 322297867716050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12694447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17525 + ... + 18234.

It is an arithmetic number, because the mean of its divisors is an integer number (1931040).

Almost surely, 2^12694445 is an apocalyptic number.

It is an amenable number.

12694445 is a deficient number, since it is larger than the sum of its proper divisors (2753875).

12694445 is an equidigital number, since it uses as much as digits as its factorization.

12694445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35835.

The product of its digits is 34560, while the sum is 35.

The square root of 12694445 is about 3562.9264657020. The cubic root of 12694445 is about 233.2766336154.

The spelling of 12694445 in words is "twelve million, six hundred ninety-four thousand, four hundred forty-five".