12681499 has 2 divisors, whose sum is σ = 12681500. Its totient is φ = 12681498.

The previous prime is 12681457. The next prime is 12681503. The reversal of 12681499 is 99418621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12681499 - 2¹¹ = 12679451 is a prime.

It is not a weakly prime, because it can be changed into another prime (12681299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6340749 + 6340750.

It is an arithmetic number, because the mean of its divisors is an integer number (6340750).

Almost surely, 2^12681499 is an apocalyptic number.

12681499 is a deficient number, since it is larger than the sum of its proper divisors (1).

12681499 is an equidigital number, since it uses as much as digits as its factorization.

12681499 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12681499 is about 3561.1092373023. The cubic root of 12681499 is about 233.1973068838.

The spelling of 12681499 in words is "twelve million, six hundred eighty-one thousand, four hundred ninety-nine".