220407569 has 8 divisors (see below), whose sum is σ = 228902760. Its totient is φ = 211972096.

The previous prime is 220407563. The next prime is 220407587. The reversal of 220407569 is 965704022.

It can be written as a sum of positive squares in 4 ways, for example, as 56055169 + 164352400 = 7487^2 + 12820^2 .

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 220407569 - 2¹² = 220403473 is a prime.

It is a super-2 number, since 2×220407569² = 97158992944979522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220407563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7334 + ... + 22239.

It is an arithmetic number, because the mean of its divisors is an integer number (28612845).

Almost surely, 2^220407569 is an apocalyptic number.

220407569 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

220407569 is a deficient number, since it is larger than the sum of its proper divisors (8495191).

220407569 is a wasteful number, since it uses less digits than its factorization.

220407569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29859.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 220407569 is about 14846.1297650263. The cubic root of 220407569 is about 604.0536341493.

The spelling of 220407569 in words is "two hundred twenty million, four hundred seven thousand, five hundred sixty-nine".