220447105 has 8 divisors (see below), whose sum is σ = 264843432. Its totient is φ = 176153088.

The previous prime is 220447099. The next prime is 220447121. The reversal of 220447105 is 501744022.

It can be written as a sum of positive squares in 4 ways, for example, as 64496961 + 155950144 = 8031^2 + 12488^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 220447105 - 2⁹ = 220446593 is a prime.

It is a super-2 number, since 2×220447105² = 97193852205762050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220447105.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20752 + ... + 29521.

It is an arithmetic number, because the mean of its divisors is an integer number (33105429).

Almost surely, 2^220447105 is an apocalyptic number.

It is an amenable number.

220447105 is a deficient number, since it is larger than the sum of its proper divisors (44396327).

220447105 is an equidigital number, since it uses as much as digits as its factorization.

220447105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51155.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 220447105 is about 14847.4612307963. The cubic root of 220447105 is about 604.0897497219.

The spelling of 220447105 in words is "two hundred twenty million, four hundred forty-seven thousand, one hundred five".