655728871 has 16 divisors (see below), whose sum is σ = 755486784. Its totient is φ = 557512704.

The previous prime is 655728847. The next prime is 655728877. The reversal of 655728871 is 178827556.

655728871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 655728871 - 2⁵ = 655728839 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 (655728877) 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, 549051 + ... + 550243.

It is an arithmetic number, because the mean of its divisors is an integer number (47217924).

Almost surely, 2^655728871 is an apocalyptic number.

655728871 is a deficient number, since it is larger than the sum of its proper divisors (99757913).

655728871 is a wasteful number, since it uses less digits than its factorization.

655728871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770.

The product of its digits is 940800, while the sum is 49.

The square root of 655728871 is about 25607.2034982346. The cubic root of 655728871 is about 868.7765738572.

The spelling of 655728871 in words is "six hundred fifty-five million, seven hundred twenty-eight thousand, eight hundred seventy-one".