220641897 has 8 divisors (see below), whose sum is σ = 336216256. Its totient is φ = 126081072.

The previous prime is 220641893. The next prime is 220641907. The reversal of 220641897 is 798146022.

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

It is not a de Polignac number, because 220641897 - 2² = 220641893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220641893) 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, 5253358 + ... + 5253399.

It is an arithmetic number, because the mean of its divisors is an integer number (42027032).

Almost surely, 2^220641897 is an apocalyptic number.

It is an amenable number.

220641897 is a deficient number, since it is larger than the sum of its proper divisors (115574359).

220641897 is a wasteful number, since it uses less digits than its factorization.

220641897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10506767.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 220641897 is about 14854.0195570088. The cubic root of 220641897 is about 604.2676264184.

The spelling of 220641897 in words is "two hundred twenty million, six hundred forty-one thousand, eight hundred ninety-seven".