2721800689 has 8 divisors (see below), whose sum is σ = 2732689440. Its totient is φ = 2710934496.

The previous prime is 2721800687. The next prime is 2721800723. The reversal of 2721800689 is 9860081272.

2721800689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2721800689 - 2¹ = 2721800687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2721800681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260602 + ... + 270844.

It is an arithmetic number, because the mean of its divisors is an integer number (341586180).

Almost surely, 2^2721800689 is an apocalyptic number.

It is an amenable number.

2721800689 is a deficient number, since it is larger than the sum of its proper divisors (10888751).

2721800689 is a wasteful number, since it uses less digits than its factorization.

2721800689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11279.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 2721800689 is about 52170.8797031447. The cubic root of 2721800689 is about 1396.2143798277.

The spelling of 2721800689 in words is "two billion, seven hundred twenty-one million, eight hundred thousand, six hundred eighty-nine".