220663215 has 24 divisors (see below), whose sum is σ = 384088848. Its totient is φ = 117192960.

The previous prime is 220663181. The next prime is 220663231. The reversal of 220663215 is 512366022.

220663215 is a `hidden beast` number, since 2 + 20 + 6 + 632 + 1 + 5 = 666.

It is not a de Polignac number, because 220663215 - 2⁶ = 220663151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 672 + ... + 21018.

It is an arithmetic number, because the mean of its divisors is an integer number (16003702).

Almost surely, 2^220663215 is an apocalyptic number.

220663215 is a deficient number, since it is larger than the sum of its proper divisors (163425633).

220663215 is a wasteful number, since it uses less digits than its factorization.

220663215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20599 (or 20596 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 220663215 is about 14854.7371232210. The cubic root of 220663215 is about 604.2870868542.

It can be divided in two parts, 22066 and 3215, that added together give a square (25281 = 159²).

The spelling of 220663215 in words is "two hundred twenty million, six hundred sixty-three thousand, two hundred fifteen".