36640841 has 4 divisors (see below), whose sum is σ = 37631172. Its totient is φ = 35650512.

The previous prime is 36640837. The next prime is 36640843. The reversal of 36640841 is 14804663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14804663 = 23 ⋅643681.

It can be written as a sum of positive squares in 2 ways, for example, as 14409616 + 22231225 = 3796^2 + 4715^2 .

It is a cyclic number.

It is not a de Polignac number, because 36640841 - 2² = 36640837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 36640798 and 36640807.

It is not an unprimeable number, because it can be changed into a prime (36640843) 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, 495110 + ... + 495183.

It is an arithmetic number, because the mean of its divisors is an integer number (9407793).

Almost surely, 2^36640841 is an apocalyptic number.

It is an amenable number.

36640841 is a deficient number, since it is larger than the sum of its proper divisors (990331).

36640841 is an equidigital number, since it uses as much as digits as its factorization.

36640841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990330.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 36640841 is about 6053.1678483254. The cubic root of 36640841 is about 332.1404816286.

The spelling of 36640841 in words is "thirty-six million, six hundred forty thousand, eight hundred forty-one".