36607221 has 24 divisors (see below), whose sum is σ = 62672064. Its totient is φ = 20917440.

The previous prime is 36607217. The next prime is 36607223. The reversal of 36607221 is 12270663.

It is a happy number.

36607221 is a `hidden beast` number, since 36 + 607 + 2 + 21 = 666.

It is not a de Polignac number, because 36607221 - 2² = 36607217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36607223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9060 + ... + 12461.

It is an arithmetic number, because the mean of its divisors is an integer number (2611336).

Almost surely, 2^36607221 is an apocalyptic number.

It is an amenable number.

36607221 is a deficient number, since it is larger than the sum of its proper divisors (26064843).

36607221 is an equidigital number, since it uses as much as digits as its factorization.

36607221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21543 (or 21531 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 36607221 is about 6050.3901527092. The cubic root of 36607221 is about 332.0388647830.

Adding to 36607221 its reverse (12270663), we get a palindrome (48877884).

The spelling of 36607221 in words is "thirty-six million, six hundred seven thousand, two hundred twenty-one".