12692861 has 2 divisors, whose sum is σ = 12692862. Its totient is φ = 12692860.

The previous prime is 12692839. The next prime is 12692873. The reversal of 12692861 is 16829621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11600836 + 1092025 = 3406^2 + 1045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12692861 is a prime.

It is a super-2 number, since 2×12692861² = 322217440730642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12692831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6346430 + 6346431.

It is an arithmetic number, because the mean of its divisors is an integer number (6346431).

Almost surely, 2^12692861 is an apocalyptic number.

It is an amenable number.

12692861 is a deficient number, since it is larger than the sum of its proper divisors (1).

12692861 is an equidigital number, since it uses as much as digits as its factorization.

12692861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 12692861 is about 3562.7041695880. The cubic root of 12692861 is about 233.2669305378.

The spelling of 12692861 in words is "twelve million, six hundred ninety-two thousand, eight hundred sixty-one".