12698281 has 2 divisors, whose sum is σ = 12698282. Its totient is φ = 12698280.

The previous prime is 12698263. The next prime is 12698291. The reversal of 12698281 is 18289621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6528025 + 6170256 = 2555^2 + 2484^2 .

It is a cyclic number.

It is not a de Polignac number, because 12698281 - 2⁵ = 12698249 is a prime.

It is a super-2 number, since 2×12698281² = 322492680709922, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 12698281 parts by 5039 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 12698281.

It is not a weakly prime, because it can be changed into another prime (12698261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6349140 + 6349141.

It is an arithmetic number, because the mean of its divisors is an integer number (6349141).

Almost surely, 2^12698281 is an apocalyptic number.

It is an amenable number.

12698281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12698281 is an equidigital number, since it uses as much as digits as its factorization.

12698281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 37.

The square root of 12698281 is about 3563.4647465634. The cubic root of 12698281 is about 233.3001283815.

The spelling of 12698281 in words is "twelve million, six hundred ninety-eight thousand, two hundred eighty-one".