12690941 has 2 divisors, whose sum is σ = 12690942. Its totient is φ = 12690940.

The previous prime is 12690929. The next prime is 12690943. The reversal of 12690941 is 14909621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12630916 + 60025 = 3554^2 + 245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12690941 is a prime.

It is a super-2 number, since 2×12690941² = 322119966930962, which contains 22 as substring.

Together with 12690943, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12690898 and 12690907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12690943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6345470 + 6345471.

It is an arithmetic number, because the mean of its divisors is an integer number (6345471).

Almost surely, 2^12690941 is an apocalyptic number.

It is an amenable number.

12690941 is a deficient number, since it is larger than the sum of its proper divisors (1).

12690941 is an equidigital number, since it uses as much as digits as its factorization.

12690941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 12690941 is about 3562.4347011559. The cubic root of 12690941 is about 233.2551681491.

It can be divided in two parts, 12690 and 941, that added together give a palindrome (13631).

The spelling of 12690941 in words is "twelve million, six hundred ninety thousand, nine hundred forty-one".