12691348 has 6 divisors (see below), whose sum is σ = 22209866. Its totient is φ = 6345672.

The previous prime is 12691337. The next prime is 12691361. The reversal of 12691348 is 84319621.

It can be written as a sum of positive squares in only one way, i.e., 7064964 + 5626384 = 2658^2 + 2372^2 .

It is a super-2 number, since 2×12691348² = 322140628114208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1586415 + ... + 1586422.

Almost surely, 2^12691348 is an apocalyptic number.

It is an amenable number.

12691348 is a deficient number, since it is larger than the sum of its proper divisors (9518518).

12691348 is a wasteful number, since it uses less digits than its factorization.

12691348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172841 (or 3172839 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 12691348 is about 3562.4918245520. The cubic root of 12691348 is about 233.2576616296.

The spelling of 12691348 in words is "twelve million, six hundred ninety-one thousand, three hundred forty-eight".