220872871 has 2 divisors, whose sum is σ = 220872872. Its totient is φ = 220872870.

The previous prime is 220872829. The next prime is 220872919. The reversal of 220872871 is 178278022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220872871 - 2²¹ = 218775719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220872871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220872271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110436435 + 110436436.

It is an arithmetic number, because the mean of its divisors is an integer number (110436436).

Almost surely, 2^220872871 is an apocalyptic number.

220872871 is a deficient number, since it is larger than the sum of its proper divisors (1).

220872871 is an equidigital number, since it uses as much as digits as its factorization.

220872871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 220872871 is about 14861.7923212512. The cubic root of 220872871 is about 604.4784075362.

The spelling of 220872871 in words is "two hundred twenty million, eight hundred seventy-two thousand, eight hundred seventy-one".