220797680 has 20 divisors (see below), whose sum is σ = 513354792. Its totient is φ = 88319040.

The previous prime is 220797667. The next prime is 220797691. The reversal of 220797680 is 86797022.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1379906 + ... + 1380065.

Almost surely, 2^220797680 is an apocalyptic number.

220797680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220797680 is an abundant number, since it is smaller than the sum of its proper divisors (292557112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220797680 is a wasteful number, since it uses less digits than its factorization.

220797680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759984 (or 2759978 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 220797680 is about 14859.2624312245. The cubic root of 220797680 is about 604.4098062419.

The spelling of 220797680 in words is "two hundred twenty million, seven hundred ninety-seven thousand, six hundred eighty".