3220660618 has 64 divisors (see below), whose sum is σ = 5964005376. Its totient is φ = 1275120000.

The previous prime is 3220660609. The next prime is 3220660637. The reversal of 3220660618 is 8160660223.

It is a happy number.

It is a super-2 number, since 2×3220660618² = 20745309632672283848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 834393 + ... + 838243.

It is an arithmetic number, because the mean of its divisors is an integer number (93187584).

Almost surely, 2^3220660618 is an apocalyptic number.

3220660618 is a deficient number, since it is larger than the sum of its proper divisors (2743344758).

3220660618 is a wasteful number, since it uses less digits than its factorization.

3220660618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3979.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 3220660618 is about 56750.8644691867. The cubic root of 3220660618 is about 1476.7772304222. Note that the first 3 decimals are identical.

The spelling of 3220660618 in words is "three billion, two hundred twenty million, six hundred sixty thousand, six hundred eighteen".