2010706721 has 4 divisors (see below), whose sum is σ = 2015956992. Its totient is φ = 2005456452.

The previous prime is 2010706697. The next prime is 2010706727. The reversal of 2010706721 is 1276070102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2010706721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2010706727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2624561 + ... + 2625326.

It is an arithmetic number, because the mean of its divisors is an integer number (503989248).

Almost surely, 2^2010706721 is an apocalyptic number.

It is an amenable number.

2010706721 is a deficient number, since it is larger than the sum of its proper divisors (5250271).

2010706721 is an equidigital number, since it uses as much as digits as its factorization.

2010706721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250270.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 2010706721 is about 44840.9045515364. The cubic root of 2010706721 is about 1262.1653203773.

Adding to 2010706721 its reverse (1276070102), we get a palindrome (3286776823).

The spelling of 2010706721 in words is "two billion, ten million, seven hundred six thousand, seven hundred twenty-one".