220644682 has 16 divisors (see below), whose sum is σ = 348697440. Its totient is φ = 104422608.

The previous prime is 220644661. The next prime is 220644689. The reversal of 220644682 is 286446022.

It is a super-2 number, since 2×220644682² = 97368151389762248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220644689) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 60433 + ... + 63979.

It is an arithmetic number, because the mean of its divisors is an integer number (21793590).

Almost surely, 2^220644682 is an apocalyptic number.

220644682 is a deficient number, since it is larger than the sum of its proper divisors (128052758).

220644682 is a wasteful number, since it uses less digits than its factorization.

220644682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5205.

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 220644682 is about 14854.1133023819. The cubic root of 220644682 is about 604.2701688159.

The spelling of 220644682 in words is "two hundred twenty million, six hundred forty-four thousand, six hundred eighty-two".