221980662 has 40 divisors (see below), whose sum is σ = 526666536. Its totient is φ = 69640128.

The previous prime is 221980657. The next prime is 221980669. The reversal of 221980662 is 266089122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221980669) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37548 + ... + 43055.

Almost surely, 2^221980662 is an apocalyptic number.

221980662 is an abundant number, since it is smaller than the sum of its proper divisors (304685874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221980662 is a wasteful number, since it uses less digits than its factorization.

221980662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80634 (or 80625 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 221980662 is about 14899.0154708289. The cubic root of 221980662 is about 605.4873126786.

The spelling of 221980662 in words is "two hundred twenty-one million, nine hundred eighty thousand, six hundred sixty-two".