12632861 has 2 divisors, whose sum is σ = 12632862. Its totient is φ = 12632860.

The previous prime is 12632857. The next prime is 12632881. The reversal of 12632861 is 16823621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8352100 + 4280761 = 2890^2 + 2069^2 .

It is a cyclic number.

It is not a de Polignac number, because 12632861 - 2² = 12632857 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12632821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6316430 + 6316431.

It is an arithmetic number, because the mean of its divisors is an integer number (6316431).

Almost surely, 2^12632861 is an apocalyptic number.

It is an amenable number.

12632861 is a deficient number, since it is larger than the sum of its proper divisors (1).

12632861 is an equidigital number, since it uses as much as digits as its factorization.

12632861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 12632861 is about 3554.2736248072. The cubic root of 12632861 is about 232.8987937482.

The spelling of 12632861 in words is "twelve million, six hundred thirty-two thousand, eight hundred sixty-one".