220794641 has 4 divisors (see below), whose sum is σ = 230394432. Its totient is φ = 211194852.

The previous prime is 220794557. The next prime is 220794647. The reversal of 220794641 is 146497022.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220794641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220794647) 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, 4799861 + ... + 4799906.

It is an arithmetic number, because the mean of its divisors is an integer number (57598608).

Almost surely, 2^220794641 is an apocalyptic number.

It is an amenable number.

220794641 is a deficient number, since it is larger than the sum of its proper divisors (9599791).

220794641 is an equidigital number, since it uses as much as digits as its factorization.

220794641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9599790.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 220794641 is about 14859.1601714229. The cubic root of 220794641 is about 604.4070332510.

The spelling of 220794641 in words is "two hundred twenty million, seven hundred ninety-four thousand, six hundred forty-one".