12704497 has 4 divisors (see below), whose sum is σ = 13681780. Its totient is φ = 11727216.

The previous prime is 12704467. The next prime is 12704507. The reversal of 12704497 is 79440721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79440721 = 643 ⋅123547.

It can be written as a sum of positive squares in 2 ways, for example, as 2005056 + 10699441 = 1416^2 + 3271^2 .

It is a cyclic number.

It is not a de Polignac number, because 12704497 - 2¹⁹ = 12180209 is a prime.

It is a super-2 number, since 2×12704497² = 322808488046018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12704467) 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 3 ways as a sum of consecutive naturals, for example, 488622 + ... + 488647.

It is an arithmetic number, because the mean of its divisors is an integer number (3420445).

Almost surely, 2^12704497 is an apocalyptic number.

It is an amenable number.

12704497 is a deficient number, since it is larger than the sum of its proper divisors (977283).

12704497 is an equidigital number, since it uses as much as digits as its factorization.

12704497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977282.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 12704497 is about 3564.3368247123. The cubic root of 12704497 is about 233.3381901483.

The spelling of 12704497 in words is "twelve million, seven hundred four thousand, four hundred ninety-seven".