220957671 has 8 divisors (see below), whose sum is σ = 321393024. Its totient is φ = 133913720.

The previous prime is 220957661. The next prime is 220957697. The reversal of 220957671 is 176759022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220957671 - 2²¹ = 218860519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220957661) 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 7 ways as a sum of consecutive naturals, for example, 3347811 + ... + 3347876.

It is an arithmetic number, because the mean of its divisors is an integer number (40174128).

Almost surely, 2^220957671 is an apocalyptic number.

220957671 is a deficient number, since it is larger than the sum of its proper divisors (100435353).

220957671 is a wasteful number, since it uses less digits than its factorization.

220957671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6695701.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 220957671 is about 14864.6450008064. The cubic root of 220957671 is about 604.5557570240. Note that the first 3 decimals are identical.

The spelling of 220957671 in words is "two hundred twenty million, nine hundred fifty-seven thousand, six hundred seventy-one".