36669643 has 2 divisors, whose sum is σ = 36669644. Its totient is φ = 36669642.

The previous prime is 36669641. The next prime is 36669679. The reversal of 36669643 is 34696663.

36669643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36669643 - 2¹ = 36669641 is a prime.

Together with 36669641, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 36669643.

It is not a weakly prime, because it can be changed into another prime (36669641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18334821 + 18334822.

It is an arithmetic number, because the mean of its divisors is an integer number (18334822).

Almost surely, 2^36669643 is an apocalyptic number.

36669643 is a deficient number, since it is larger than the sum of its proper divisors (1).

36669643 is an equidigital number, since it uses as much as digits as its factorization.

36669643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 43.

The square root of 36669643 is about 6055.5464658444. The cubic root of 36669643 is about 332.2274865882.

The spelling of 36669643 in words is "thirty-six million, six hundred sixty-nine thousand, six hundred forty-three".