36836581 has 4 divisors (see below), whose sum is σ = 36980172. Its totient is φ = 36692992.

The previous prime is 36836563. The next prime is 36836617. The reversal of 36836581 is 18563863.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17564481 + 19272100 = 4191^2 + 4390^2 .

It is a cyclic number.

It is not a de Polignac number, because 36836581 - 2⁷ = 36836453 is a prime.

It is a super-2 number, since 2×36836581² = 2713867399539122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36836521) 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, 71410 + ... + 71923.

It is an arithmetic number, because the mean of its divisors is an integer number (9245043).

Almost surely, 2^36836581 is an apocalyptic number.

It is an amenable number.

36836581 is a deficient number, since it is larger than the sum of its proper divisors (143591).

36836581 is a wasteful number, since it uses less digits than its factorization.

36836581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143590.

The product of its digits is 103680, while the sum is 40.

The square root of 36836581 is about 6069.3147059615. The cubic root of 36836581 is about 332.7308770174.

The spelling of 36836581 in words is "thirty-six million, eight hundred thirty-six thousand, five hundred eighty-one".