220680673 has 4 divisors (see below), whose sum is σ = 220720788. Its totient is φ = 220640560.

The previous prime is 220680631. The next prime is 220680721. The reversal of 220680673 is 376086022.

220680673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 114425809 + 106254864 = 10697^2 + 10308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220680673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220689673) 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, 10186 + ... + 23347.

It is an arithmetic number, because the mean of its divisors is an integer number (55180197).

Almost surely, 2^220680673 is an apocalyptic number.

It is an amenable number.

220680673 is a deficient number, since it is larger than the sum of its proper divisors (40115).

220680673 is an equidigital number, since it uses as much as digits as its factorization.

220680673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40114.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 220680673 is about 14855.3247355957. The cubic root of 220680673 is about 604.3030227013.

The spelling of 220680673 in words is "two hundred twenty million, six hundred eighty thousand, six hundred seventy-three".