220688061 has 16 divisors (see below), whose sum is σ = 321879360. Its totient is φ = 133384320.

The previous prime is 220688029. The next prime is 220688081. The reversal of 220688061 is 160886022.

It is not a de Polignac number, because 220688061 - 2⁵ = 220688029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220688011) 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, 3345 + ... + 21273.

It is an arithmetic number, because the mean of its divisors is an integer number (20117460).

Almost surely, 2^220688061 is an apocalyptic number.

It is an amenable number.

220688061 is a deficient number, since it is larger than the sum of its proper divisors (101191299).

220688061 is a wasteful number, since it uses less digits than its factorization.

220688061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18316.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 220688061 is about 14855.5733985599. The cubic root of 220688061 is about 604.3097662927.

The spelling of 220688061 in words is "two hundred twenty million, six hundred eighty-eight thousand, sixty-one".