220661332 has 12 divisors (see below), whose sum is σ = 386465940. Its totient is φ = 110242496.

The previous prime is 220661281. The next prime is 220661347. The reversal of 220661332 is 233166022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 199261456 + 21399876 = 14116^2 + 4626^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220661297 and 220661306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16243 + ... + 26554.

It is an arithmetic number, because the mean of its divisors is an integer number (32205495).

Almost surely, 2^220661332 is an apocalyptic number.

It is an amenable number.

220661332 is a deficient number, since it is larger than the sum of its proper divisors (165804608).

220661332 is a wasteful number, since it uses less digits than its factorization.

220661332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44090 (or 44088 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 220661332 is about 14854.6737426306. The cubic root of 220661332 is about 604.2853679816.

The spelling of 220661332 in words is "two hundred twenty million, six hundred sixty-one thousand, three hundred thirty-two".