220612655 has 16 divisors (see below), whose sum is σ = 281426400. Its totient is φ = 165445632.

The previous prime is 220612649. The next prime is 220612681. The reversal of 220612655 is 556216022.

It is not a de Polignac number, because 220612655 - 2¹⁰ = 220611631 is a prime.

It is a super-2 number, since 2×220612655² = 97339887092298050, which contains 22 as substring.

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 in 15 ways as a sum of consecutive naturals, for example, 16796 + ... + 26894.

It is an arithmetic number, because the mean of its divisors is an integer number (17589150).

Almost surely, 2^220612655 is an apocalyptic number.

220612655 is a deficient number, since it is larger than the sum of its proper divisors (60813745).

220612655 is a wasteful number, since it uses less digits than its factorization.

220612655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10378.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 220612655 is about 14853.0352117000. The cubic root of 220612655 is about 604.2409304088.

Adding to 220612655 its reverse (556216022), we get a palindrome (776828677).

The spelling of 220612655 in words is "two hundred twenty million, six hundred twelve thousand, six hundred fifty-five".