220605206 has 4 divisors (see below), whose sum is σ = 330907812. Its totient is φ = 110302602.

The previous prime is 220605199. The next prime is 220605221. The reversal of 220605206 is 602506022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55151300 + ... + 55151303.

It is an arithmetic number, because the mean of its divisors is an integer number (82726953).

Almost surely, 2^220605206 is an apocalyptic number.

220605206 is a deficient number, since it is larger than the sum of its proper divisors (110302606).

220605206 is a wasteful number, since it uses less digits than its factorization.

220605206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110302605.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 220605206 is about 14852.7844527550. The cubic root of 220605206 is about 604.2341295880.

The spelling of 220605206 in words is "two hundred twenty million, six hundred five thousand, two hundred six".