220322987 has 8 divisors (see below), whose sum is σ = 223204800. Its totient is φ = 217453824.

The previous prime is 220322909. The next prime is 220323007. The reversal of 220322987 is 789223022.

It is a happy number.

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

It is not a de Polignac number, because 220322987 - 2¹⁰ = 220321963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220322287) 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, 34814 + ... + 40652.

It is an arithmetic number, because the mean of its divisors is an integer number (27900600).

Almost surely, 2^220322987 is an apocalyptic number.

220322987 is a deficient number, since it is larger than the sum of its proper divisors (2881813).

220322987 is an equidigital number, since it uses as much as digits as its factorization.

220322987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 220322987 is about 14843.2808704814. The cubic root of 220322987 is about 603.9763551918.

Adding to 220322987 its sum of digits (35), we get a palindrome (220323022).

The spelling of 220322987 in words is "two hundred twenty million, three hundred twenty-two thousand, nine hundred eighty-seven".