220324987 has 2 divisors, whose sum is σ = 220324988. Its totient is φ = 220324986.

The previous prime is 220324961. The next prime is 220325009. The reversal of 220324987 is 789423022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220324987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220324087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110162493 + 110162494.

It is an arithmetic number, because the mean of its divisors is an integer number (110162494).

Almost surely, 2^220324987 is an apocalyptic number.

220324987 is a deficient number, since it is larger than the sum of its proper divisors (1).

220324987 is an equidigital number, since it uses as much as digits as its factorization.

220324987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 220324987 is about 14843.3482408788. The cubic root of 220324987 is about 603.9781827346.

The spelling of 220324987 in words is "two hundred twenty million, three hundred twenty-four thousand, nine hundred eighty-seven".