36501609 has 4 divisors (see below), whose sum is σ = 48668816. Its totient is φ = 24334404.

The previous prime is 36501581. The next prime is 36501611. The reversal of 36501609 is 90610563.

It is a happy number.

36501609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 36501609 - 2¹⁶ = 36436073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36501629) 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 in 3 ways as a sum of consecutive naturals, for example, 6083599 + ... + 6083604.

It is an arithmetic number, because the mean of its divisors is an integer number (12167204).

Almost surely, 2^36501609 is an apocalyptic number.

It is an amenable number.

36501609 is a deficient number, since it is larger than the sum of its proper divisors (12167207).

36501609 is a wasteful number, since it uses less digits than its factorization.

36501609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12167206.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 36501609 is about 6041.6561471173. The cubic root of 36501609 is about 331.7192460039.

The spelling of 36501609 in words is "thirty-six million, five hundred one thousand, six hundred nine".