220997682 has 24 divisors (see below), whose sum is σ = 481772304. Its totient is φ = 73212984.

The previous prime is 220997669. The next prime is 220997687. The reversal of 220997682 is 286799022.

It is not an unprimeable number, because it can be changed into a prime (220997687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34728 + ... + 40595.

It is an arithmetic number, because the mean of its divisors is an integer number (20073846).

Almost surely, 2^220997682 is an apocalyptic number.

220997682 is an abundant number, since it is smaller than the sum of its proper divisors (260774622).

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

220997682 is a wasteful number, since it uses less digits than its factorization.

220997682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75494 (or 75491 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 220997682 is about 14865.9907843372. The cubic root of 220997682 is about 604.5922457934.

The spelling of 220997682 in words is "two hundred twenty million, nine hundred ninety-seven thousand, six hundred eighty-two".