220704769 has 4 divisors (see below), whose sum is σ = 223728196. Its totient is φ = 217681344.

The previous prime is 220704721. The next prime is 220704787. The reversal of 220704769 is 967407022.

It is a happy number.

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 38130625 + 182574144 = 6175^2 + 13512^2 .

It is a cyclic number.

It is not a de Polignac number, because 220704769 - 2⁹ = 220704257 is a prime.

It is a super-2 number, since 2×220704769² = 97421190118686722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220704269) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1511604 + ... + 1511749.

It is an arithmetic number, because the mean of its divisors is an integer number (55932049).

Almost surely, 2^220704769 is an apocalyptic number.

It is an amenable number.

220704769 is a deficient number, since it is larger than the sum of its proper divisors (3023427).

220704769 is an equidigital number, since it uses as much as digits as its factorization.

220704769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023426.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 220704769 is about 14856.1357357827. The cubic root of 220704769 is about 604.3250164045.

The spelling of 220704769 in words is "two hundred twenty million, seven hundred four thousand, seven hundred sixty-nine".