220996 has 6 divisors (see below), whose sum is σ = 386750. Its totient is φ = 110496.

The previous prime is 220973. The next prime is 221021. The reversal of 220996 is 699022.

It can be written as a sum of positive squares in only one way, i.e., 202500 + 18496 = 450^2 + 136^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27621 + ... + 27628.

2²²⁰⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

220996 is a deficient number, since it is larger than the sum of its proper divisors (165754).

220996 is a wasteful number, since it uses less digits than its factorization.

220996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55253 (or 55251 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 220996 is about 470.1021165662. The cubic root of 220996 is about 60.4590711951.

The spelling of 220996 in words is "two hundred twenty thousand, nine hundred ninety-six".