220689736 has 32 divisors (see below), whose sum is σ = 422100000. Its totient is φ = 108141696.

The previous prime is 220689709. The next prime is 220689737. The reversal of 220689736 is 637986022.

220689736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220689692 and 220689701.

It is not an unprimeable number, because it can be changed into a prime (220689737) 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, 235060 + ... + 235996.

It is an arithmetic number, because the mean of its divisors is an integer number (13190625).

Almost surely, 2^220689736 is an apocalyptic number.

It is an amenable number.

220689736 is a deficient number, since it is larger than the sum of its proper divisors (201410264).

220689736 is a wasteful number, since it uses less digits than its factorization.

220689736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501 (or 1497 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 220689736 is about 14855.6297746006. The cubic root of 220689736 is about 604.3112951721.

The spelling of 220689736 in words is "two hundred twenty million, six hundred eighty-nine thousand, seven hundred thirty-six".