12746581 has 2 divisors, whose sum is σ = 12746582. Its totient is φ = 12746580.

The previous prime is 12746543. The next prime is 12746593. The reversal of 12746581 is 18564721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12744900 + 1681 = 3570^2 + 41^2 .

It is a cyclic number.

It is not a de Polignac number, because 12746581 - 2⁷ = 12746453 is a prime.

It is a super-2 number, since 2×12746581² = 324950654379122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12746521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6373290 + 6373291.

It is an arithmetic number, because the mean of its divisors is an integer number (6373291).

Almost surely, 2^12746581 is an apocalyptic number.

It is an amenable number.

12746581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12746581 is an equidigital number, since it uses as much as digits as its factorization.

12746581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 34.

The square root of 12746581 is about 3570.2354264110. The cubic root of 12746581 is about 233.5955526007.

The spelling of 12746581 in words is "twelve million, seven hundred forty-six thousand, five hundred eighty-one".