220965841 has 4 divisors (see below), whose sum is σ = 221183284. Its totient is φ = 220748400.

The previous prime is 220965827. The next prime is 220965869. The reversal of 220965841 is 148569022.

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 190329616 + 30636225 = 13796^2 + 5535^2 .

It is a cyclic number.

It is not a de Polignac number, because 220965841 - 2⁵ = 220965809 is a prime.

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 220965841.

It is not an unprimeable number, because it can be changed into a prime (220966841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107190 + ... + 109231.

It is an arithmetic number, because the mean of its divisors is an integer number (55295821).

Almost surely, 2^220965841 is an apocalyptic number.

It is an amenable number.

220965841 is a deficient number, since it is larger than the sum of its proper divisors (217443).

220965841 is a wasteful number, since it uses less digits than its factorization.

220965841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217442.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 220965841 is about 14864.9198114218. The cubic root of 220965841 is about 604.5632081640.

The spelling of 220965841 in words is "two hundred twenty million, nine hundred sixty-five thousand, eight hundred forty-one".