2996006721 has 4 divisors (see below), whose sum is σ = 3994675632. Its totient is φ = 1997337812.

The previous prime is 2996006719. The next prime is 2996006729. The reversal of 2996006721 is 1276006992.

2996006721 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 2996006721 - 2¹ = 2996006719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2996006729) 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, 499334451 + ... + 499334456.

It is an arithmetic number, because the mean of its divisors is an integer number (998668908).

Almost surely, 2^2996006721 is an apocalyptic number.

It is an amenable number.

2996006721 is a deficient number, since it is larger than the sum of its proper divisors (998668911).

2996006721 is an equidigital number, since it uses as much as digits as its factorization.

2996006721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998668910.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 2996006721 is about 54735.7901285804. The cubic root of 2996006721 is about 1441.6093633959.

The spelling of 2996006721 in words is "two billion, nine hundred ninety-six million, six thousand, seven hundred twenty-one".