12813698 has 4 divisors (see below), whose sum is σ = 19220550. Its totient is φ = 6406848.

The previous prime is 12813677. The next prime is 12813701. The reversal of 12813698 is 89631821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89631821 = 331 ⋅270791.

It can be written as a sum of positive squares in only one way, i.e., 12794929 + 18769 = 3577^2 + 137^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203423 + ... + 3203426.

Almost surely, 2^12813698 is an apocalyptic number.

12813698 is a deficient number, since it is larger than the sum of its proper divisors (6406852).

12813698 is an equidigital number, since it uses as much as digits as its factorization.

12813698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6406851.

The product of its digits is 20736, while the sum is 38.

The square root of 12813698 is about 3579.6226058064. The cubic root of 12813698 is about 234.0048334648.

The spelling of 12813698 in words is "twelve million, eight hundred thirteen thousand, six hundred ninety-eight".