36906021 has 12 divisors (see below), whose sum is σ = 53388972. Its totient is φ = 24566976.

The previous prime is 36906011. The next prime is 36906047. The reversal of 36906021 is 12060963.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11655396 + 25250625 = 3414^2 + 5025^2 .

It is not a de Polignac number, because 36906021 - 2⁵ = 36905989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36906011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4105 + ... + 9521.

It is an arithmetic number, because the mean of its divisors is an integer number (4449081).

Almost surely, 2^36906021 is an apocalyptic number.

It is an amenable number.

36906021 is a deficient number, since it is larger than the sum of its proper divisors (16482951).

36906021 is a wasteful number, since it uses less digits than its factorization.

36906021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6180 (or 6177 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 36906021 is about 6075.0325925052. The cubic root of 36906021 is about 332.9398208488.

Adding to 36906021 its reverse (12060963), we get a palindrome (48966984).

The spelling of 36906021 in words is "thirty-six million, nine hundred six thousand, twenty-one".