220686241 has 16 divisors (see below), whose sum is σ = 235475968. Its totient is φ = 206452800.

The previous prime is 220686233. The next prime is 220686251. The reversal of 220686241 is 142686022.

It is a cyclic number.

It is not a de Polignac number, because 220686241 - 2³ = 220686233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220686211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207076 + ... + 208138.

It is an arithmetic number, because the mean of its divisors is an integer number (14717248).

Almost surely, 2^220686241 is an apocalyptic number.

It is an amenable number.

220686241 is a deficient number, since it is larger than the sum of its proper divisors (14789727).

220686241 is a wasteful number, since it uses less digits than its factorization.

220686241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 220686241 is about 14855.5121419627. The cubic root of 220686241 is about 604.3081050538.

The spelling of 220686241 in words is "two hundred twenty million, six hundred eighty-six thousand, two hundred forty-one".