12805497 has 6 divisors (see below), whose sum is σ = 18496842. Its totient is φ = 8536992.

The previous prime is 12805493. The next prime is 12805517. The reversal of 12805497 is 79450821.

It can be written as a sum of positive squares in only one way, i.e., 8433216 + 4372281 = 2904^2 + 2091^2 .

It is not a de Polignac number, because 12805497 - 2² = 12805493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12805493) 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 5 ways as a sum of consecutive naturals, for example, 711408 + ... + 711425.

It is an arithmetic number, because the mean of its divisors is an integer number (3082807).

Almost surely, 2^12805497 is an apocalyptic number.

It is an amenable number.

12805497 is a deficient number, since it is larger than the sum of its proper divisors (5691345).

12805497 is a wasteful number, since it uses less digits than its factorization.

12805497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422839 (or 1422836 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 12805497 is about 3578.4769106423. The cubic root of 12805497 is about 233.9549003594.

The spelling of 12805497 in words is "twelve million, eight hundred five thousand, four hundred ninety-seven".