213606220 has 12 divisors (see below), whose sum is σ = 448573104. Its totient is φ = 85442480.

The previous prime is 213606209. The next prime is 213606229. The reversal of 213606220 is 22606312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 213606191 and 213606200.

It is not an unprimeable number, because it can be changed into a prime (213606229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5340136 + ... + 5340175.

It is an arithmetic number, because the mean of its divisors is an integer number (37381092).

Almost surely, 2^213606220 is an apocalyptic number.

213606220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213606220 is an abundant number, since it is smaller than the sum of its proper divisors (234966884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213606220 is a wasteful number, since it uses less digits than its factorization.

213606220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10680320 (or 10680318 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 213606220 is about 14615.2735177964. The cubic root of 213606220 is about 597.7752984035.

The spelling of 213606220 in words is "two hundred thirteen million, six hundred six thousand, two hundred twenty".