36638227 has 4 divisors (see below), whose sum is σ = 36665640. Its totient is φ = 36610816.

The previous prime is 36638221. The next prime is 36638243. The reversal of 36638227 is 72283663.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36638227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36638221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11593 + ... + 14410.

It is an arithmetic number, because the mean of its divisors is an integer number (9166410).

Almost surely, 2^36638227 is an apocalyptic number.

36638227 is a deficient number, since it is larger than the sum of its proper divisors (27413).

36638227 is a wasteful number, since it uses less digits than its factorization.

36638227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27412.

The product of its digits is 72576, while the sum is 37.

The square root of 36638227 is about 6052.9519244745. The cubic root of 36638227 is about 332.1325830119.

The spelling of 36638227 in words is "thirty-six million, six hundred thirty-eight thousand, two hundred twenty-seven".