220605726 has 32 divisors (see below), whose sum is σ = 497923200. Its totient is φ = 64544480.

The previous prime is 220605691. The next prime is 220605727. The reversal of 220605726 is 627506022.

220605726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220605693 and 220605702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220605727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55716 + ... + 59543.

It is an arithmetic number, because the mean of its divisors is an integer number (15560100).

Almost surely, 2^220605726 is an apocalyptic number.

220605726 is an abundant number, since it is smaller than the sum of its proper divisors (277317474).

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

220605726 is a wasteful number, since it uses less digits than its factorization.

220605726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115304.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 220605726 is about 14852.8019578799. The cubic root of 220605726 is about 604.2346043449.

The spelling of 220605726 in words is "two hundred twenty million, six hundred five thousand, seven hundred twenty-six".