12697499 has 4 divisors (see below), whose sum is σ = 12704664. Its totient is φ = 12690336.

The previous prime is 12697469. The next prime is 12697501. The reversal of 12697499 is 99479621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 99479621 = 541 ⋅183881.

It is a cyclic number.

It is not a de Polignac number, because 12697499 - 2¹⁶ = 12631963 is a prime.

It is a super-2 number, since 2×12697499² = 322452961710002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12697409) 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, 1244 + ... + 5190.

It is an arithmetic number, because the mean of its divisors is an integer number (3176166).

Almost surely, 2^12697499 is an apocalyptic number.

12697499 is a deficient number, since it is larger than the sum of its proper divisors (7165).

12697499 is an equidigital number, since it uses as much as digits as its factorization.

12697499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164.

The product of its digits is 244944, while the sum is 47.

The square root of 12697499 is about 3563.3550202022. The cubic root of 12697499 is about 233.2953391651.

The spelling of 12697499 in words is "twelve million, six hundred ninety-seven thousand, four hundred ninety-nine".