36643361 has 2 divisors, whose sum is σ = 36643362. Its totient is φ = 36643360.

The previous prime is 36643351. The next prime is 36643363. The reversal of 36643361 is 16334663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36372961 + 270400 = 6031^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 36643361 - 2¹⁸ = 36381217 is a prime.

Together with 36643363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36643363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18321680 + 18321681.

It is an arithmetic number, because the mean of its divisors is an integer number (18321681).

Almost surely, 2^36643361 is an apocalyptic number.

It is an amenable number.

36643361 is a deficient number, since it is larger than the sum of its proper divisors (1).

36643361 is an equidigital number, since it uses as much as digits as its factorization.

36643361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 32.

The square root of 36643361 is about 6053.3760002167. The cubic root of 36643361 is about 332.1480958536.

The spelling of 36643361 in words is "thirty-six million, six hundred forty-three thousand, three hundred sixty-one".