220946485 has 4 divisors (see below), whose sum is σ = 265135788. Its totient is φ = 176757184.

The previous prime is 220946471. The next prime is 220946491. The reversal of 220946485 is 584649022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39828721 + 181117764 = 6311^2 + 13458^2 .

It is a cyclic number.

It is not a de Polignac number, because 220946485 - 2⁷ = 220946357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22094644 + ... + 22094653.

It is an arithmetic number, because the mean of its divisors is an integer number (66283947).

Almost surely, 2^220946485 is an apocalyptic number.

It is an amenable number.

220946485 is a deficient number, since it is larger than the sum of its proper divisors (44189303).

220946485 is an equidigital number, since it uses as much as digits as its factorization.

220946485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44189302.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 220946485 is about 14864.2687341154. The cubic root of 220946485 is about 604.5455549571.

The spelling of 220946485 in words is "two hundred twenty million, nine hundred forty-six thousand, four hundred eighty-five".