36602221 has 2 divisors, whose sum is σ = 36602222. Its totient is φ = 36602220.

The previous prime is 36602219. The next prime is 36602231. The reversal of 36602221 is 12220663.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25110121 + 11492100 = 5011^2 + 3390^2 .

It is a cyclic number.

It is not a de Polignac number, because 36602221 - 2¹ = 36602219 is a prime.

Together with 36602219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 36602192 and 36602201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36602231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18301110 + 18301111.

It is an arithmetic number, because the mean of its divisors is an integer number (18301111).

Almost surely, 2^36602221 is an apocalyptic number.

It is an amenable number.

36602221 is a deficient number, since it is larger than the sum of its proper divisors (1).

36602221 is an equidigital number, since it uses as much as digits as its factorization.

36602221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 36602221 is about 6049.9769421048. The cubic root of 36602221 is about 332.0237469103.

Adding to 36602221 its reverse (12220663), we get a palindrome (48822884).

The spelling of 36602221 in words is "thirty-six million, six hundred two thousand, two hundred twenty-one".