12690697 has 2 divisors, whose sum is σ = 12690698. Its totient is φ = 12690696.

The previous prime is 12690683. The next prime is 12690731. The reversal of 12690697 is 79609621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8128201 + 4562496 = 2851^2 + 2136^2 .

It is a cyclic number.

It is not a de Polignac number, because 12690697 - 2¹¹ = 12688649 is a prime.

It is a super-2 number, since 2×12690697² = 322107580691618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12690637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6345348 + 6345349.

It is an arithmetic number, because the mean of its divisors is an integer number (6345349).

Almost surely, 2^12690697 is an apocalyptic number.

It is an amenable number.

12690697 is a deficient number, since it is larger than the sum of its proper divisors (1).

12690697 is an equidigital number, since it uses as much as digits as its factorization.

12690697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 12690697 is about 3562.4004547496. The cubic root of 12690697 is about 233.2536732606.

The spelling of 12690697 in words is "twelve million, six hundred ninety thousand, six hundred ninety-seven".