36668213 has 4 divisors (see below), whose sum is σ = 36842208. Its totient is φ = 36494220.

The previous prime is 36668189. The next prime is 36668237. The reversal of 36668213 is 31286663.

36668213 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, and also an emirpimes, since its reverse is a distinct semiprime: 31286663 = 1709 ⋅18307.

It is an interprime number because it is at equal distance from previous prime (36668189) and next prime (36668237).

It is a cyclic number.

It is not a de Polignac number, because 36668213 - 2¹⁶ = 36602677 is a prime.

It is a super-2 number, since 2×36668213² = 2689115689226738, 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 (36668243) 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, 86681 + ... + 87102.

It is an arithmetic number, because the mean of its divisors is an integer number (9210552).

Almost surely, 2^36668213 is an apocalyptic number.

It is an amenable number.

36668213 is a deficient number, since it is larger than the sum of its proper divisors (173995).

36668213 is a wasteful number, since it uses less digits than its factorization.

36668213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173994.

The product of its digits is 31104, while the sum is 35.

The square root of 36668213 is about 6055.4283911215. The cubic root of 36668213 is about 332.2231679252.

The spelling of 36668213 in words is "thirty-six million, six hundred sixty-eight thousand, two hundred thirteen".