220620618 has 16 divisors (see below), whose sum is σ = 490268160. Its totient is φ = 73540188.

The previous prime is 220620599. The next prime is 220620629. The reversal of 220620618 is 816026022.

220620618 is a `hidden beast` number, since 2 + 20 + 6 + 20 + 618 = 666.

220620618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 220620591 and 220620600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2042730 + ... + 2042837.

It is an arithmetic number, because the mean of its divisors is an integer number (30641760).

Almost surely, 2^220620618 is an apocalyptic number.

220620618 is an abundant number, since it is smaller than the sum of its proper divisors (269647542).

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

220620618 is a wasteful number, since it uses less digits than its factorization.

220620618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4085578 (or 4085572 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 220620618 is about 14853.3032689702. The cubic root of 220620618 is about 604.2482003342.

The spelling of 220620618 in words is "two hundred twenty million, six hundred twenty thousand, six hundred eighteen".