12036691 has 2 divisors, whose sum is σ = 12036692. Its totient is φ = 12036690.

The previous prime is 12036641. The next prime is 12036707. The reversal of 12036691 is 19663021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12036691 - 2⁹ = 12036179 is a prime.

It is not a weakly prime, because it can be changed into another prime (12036601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6018345 + 6018346.

It is an arithmetic number, because the mean of its divisors is an integer number (6018346).

Almost surely, 2^12036691 is an apocalyptic number.

12036691 is a deficient number, since it is larger than the sum of its proper divisors (1).

12036691 is an equidigital number, since it uses as much as digits as its factorization.

12036691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 12036691 is about 3469.3934628404. The cubic root of 12036691 is about 229.1759483771.

The spelling of 12036691 in words is "twelve million, thirty-six thousand, six hundred ninety-one".