36620221 has 8 divisors (see below), whose sum is σ = 40068000. Its totient is φ = 33192240.

The previous prime is 36620203. The next prime is 36620273. The reversal of 36620221 is 12202663.

It is a happy number.

It is the 2471-st star number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36620221 - 2⁵ = 36620189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36620192 and 36620201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36620281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931 + ... + 8608.

It is an arithmetic number, because the mean of its divisors is an integer number (5008500).

Almost surely, 2^36620221 is an apocalyptic number.

It is an amenable number.

36620221 is a deficient number, since it is larger than the sum of its proper divisors (3447779).

36620221 is a wasteful number, since it uses less digits than its factorization.

36620221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9899.

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

The square root of 36620221 is about 6051.4643682335. The cubic root of 36620221 is about 332.0781648105.

Adding to 36620221 its reverse (12202663), we get a palindrome (48822884).

The spelling of 36620221 in words is "thirty-six million, six hundred twenty thousand, two hundred twenty-one".