2220660669 has 4 divisors (see below), whose sum is σ = 2960880896. Its totient is φ = 1480440444.

The previous prime is 2220660661. The next prime is 2220660713. The reversal of 2220660669 is 9660660222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2220660669 - 2³ = 2220660661 is a prime.

It is a super-2 number, since 2×2220660669² = 9862667613687055122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220660661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370110109 + ... + 370110114.

It is an arithmetic number, because the mean of its divisors is an integer number (740220224).

Almost surely, 2^2220660669 is an apocalyptic number.

It is an amenable number.

2220660669 is a deficient number, since it is larger than the sum of its proper divisors (740220227).

2220660669 is an equidigital number, since it uses as much as digits as its factorization.

2220660669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740220226.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 2220660669 is about 47123.8863953303. The cubic root of 2220660669 is about 1304.6501450562.

The spelling of 2220660669 in words is "two billion, two hundred twenty million, six hundred sixty thousand, six hundred sixty-nine".