2854705721 has 16 divisors (see below), whose sum is σ = 3283184640. Its totient is φ = 2431432080.

The previous prime is 2854705709. The next prime is 2854705747. The reversal of 2854705721 is 1275074582.

2854705721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2854705721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2854705781) 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, 1309010 + ... + 1311188.

It is an arithmetic number, because the mean of its divisors is an integer number (205199040).

Almost surely, 2^2854705721 is an apocalyptic number.

It is an amenable number.

2854705721 is a deficient number, since it is larger than the sum of its proper divisors (428478919).

2854705721 is a wasteful number, since it uses less digits than its factorization.

2854705721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284.

The product of its (nonzero) digits is 156800, while the sum is 41.

The square root of 2854705721 is about 53429.4461977663. The cubic root of 2854705721 is about 1418.5798340263.

The spelling of 2854705721 in words is "two billion, eight hundred fifty-four million, seven hundred five thousand, seven hundred twenty-one".