36204661 has 4 divisors (see below), whose sum is σ = 36276300. Its totient is φ = 36133024.

The previous prime is 36204643. The next prime is 36204697. The reversal of 36204661 is 16640263.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16640263 = 17 ⋅978839.

It can be written as a sum of positive squares in 2 ways, for example, as 18438436 + 17766225 = 4294^2 + 4215^2 .

It is a cyclic number.

It is not a de Polignac number, because 36204661 - 2⁵ = 36204629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36204631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35056 + ... + 36073.

It is an arithmetic number, because the mean of its divisors is an integer number (9069075).

Almost surely, 2^36204661 is an apocalyptic number.

It is an amenable number.

36204661 is a deficient number, since it is larger than the sum of its proper divisors (71639).

36204661 is an equidigital number, since it uses as much as digits as its factorization.

36204661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71638.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 36204661 is about 6017.0309123354. The cubic root of 36204661 is about 330.8172611494.

It can be divided in two parts, 3620 and 4661, that added together give a square (8281 = 91²).

The spelling of 36204661 in words is "thirty-six million, two hundred four thousand, six hundred sixty-one".