220616545 has 16 divisors (see below), whose sum is σ = 268139520. Its totient is φ = 174239424.

The previous prime is 220616537. The next prime is 220616549. The reversal of 220616545 is 545616022.

220616545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 220616545 - 2³ = 220616537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220616549) 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, 199464 + ... + 200566.

It is an arithmetic number, because the mean of its divisors is an integer number (16758720).

Almost surely, 2^220616545 is an apocalyptic number.

It is an amenable number.

220616545 is a deficient number, since it is larger than the sum of its proper divisors (47522975).

220616545 is a wasteful number, since it uses less digits than its factorization.

220616545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 220616545 is about 14853.1661607887. The cubic root of 220616545 is about 604.2444818572.

The spelling of 220616545 in words is "two hundred twenty million, six hundred sixteen thousand, five hundred forty-five".