3220665155 has 16 divisors (see below), whose sum is σ = 3933900000. Its totient is φ = 2530544640.

The previous prime is 3220665139. The next prime is 3220665163. The reversal of 3220665155 is 5515660223.

It is not a de Polignac number, because 3220665155 - 2⁴ = 3220665139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364085 + ... + 372825.

It is an arithmetic number, because the mean of its divisors is an integer number (245868750).

Almost surely, 2^3220665155 is an apocalyptic number.

3220665155 is a deficient number, since it is larger than the sum of its proper divisors (713234845).

3220665155 is a wasteful number, since it uses less digits than its factorization.

3220665155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10054.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 3220665155 is about 56750.9044421320. The cubic root of 3220665155 is about 1476.7779238757. Note that the first 3 decimals are identical.

The spelling of 3220665155 in words is "three billion, two hundred twenty million, six hundred sixty-five thousand, one hundred fifty-five".