2810721066 has 16 divisors (see below), whose sum is σ = 5664355488. Its totient is φ = 929754800.

The previous prime is 2810721029. The next prime is 2810721073. The reversal of 2810721066 is 6601270182.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787205 + ... + 1788776.

It is an arithmetic number, because the mean of its divisors is an integer number (354022218).

Almost surely, 2^2810721066 is an apocalyptic number.

2810721066 is an abundant number, since it is smaller than the sum of its proper divisors (2853634422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2810721066 is a wasteful number, since it uses less digits than its factorization.

2810721066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576117.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 2810721066 is about 53016.2339854502. The cubic root of 2810721066 is about 1411.2563732664.

The spelling of 2810721066 in words is "two billion, eight hundred ten million, seven hundred twenty-one thousand, sixty-six".