220646013 has 16 divisors (see below), whose sum is σ = 336437760. Its totient is φ = 126002736.

The previous prime is 220646011. The next prime is 220646021. The reversal of 220646013 is 310646022.

It is not a de Polignac number, because 220646013 - 2¹ = 220646011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220646011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49678 + ... + 53936.

It is an arithmetic number, because the mean of its divisors is an integer number (21027360).

Almost surely, 2^220646013 is an apocalyptic number.

It is an amenable number.

220646013 is a deficient number, since it is larger than the sum of its proper divisors (115791747).

220646013 is a wasteful number, since it uses less digits than its factorization.

220646013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 220646013 is about 14854.1581047194. The cubic root of 220646013 is about 604.2713838644.

Subtracting 220646013 from its reverse (310646022), we obtain a palindrome (90000009).

The spelling of 220646013 in words is "two hundred twenty million, six hundred forty-six thousand, thirteen".