12691498 has 4 divisors (see below), whose sum is σ = 19037250. Its totient is φ = 6345748.

The previous prime is 12691451. The next prime is 12691501. The reversal of 12691498 is 89419621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9653449 + 3038049 = 3107^2 + 1743^2 .

It is a super-2 number, since 2×12691498² = 322148242968008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 12691498.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3172873 + ... + 3172876.

Almost surely, 2^12691498 is an apocalyptic number.

12691498 is a deficient number, since it is larger than the sum of its proper divisors (6345752).

12691498 is an equidigital number, since it uses as much as digits as its factorization.

12691498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6345751.

The product of its digits is 31104, while the sum is 40.

The square root of 12691498 is about 3562.5128771697. The cubic root of 12691498 is about 233.2585805893.

The spelling of 12691498 in words is "twelve million, six hundred ninety-one thousand, four hundred ninety-eight".