220959671 has 16 divisors (see below), whose sum is σ = 240266400. Its totient is φ = 202704768.

The previous prime is 220959667. The next prime is 220959679. The reversal of 220959671 is 176959022.

It is a cyclic number.

It is not a de Polignac number, because 220959671 - 2² = 220959667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220959679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43745 + ... + 48533.

It is an arithmetic number, because the mean of its divisors is an integer number (15016650).

Almost surely, 2^220959671 is an apocalyptic number.

220959671 is a deficient number, since it is larger than the sum of its proper divisors (19306729).

220959671 is a wasteful number, since it uses less digits than its factorization.

220959671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 220959671 is about 14864.7122743765. The cubic root of 220959671 is about 604.5575810655.

The spelling of 220959671 in words is "two hundred twenty million, nine hundred fifty-nine thousand, six hundred seventy-one".