2001066729 has 32 divisors (see below), whose sum is σ = 2816522880. Its totient is φ = 1261951488.

The previous prime is 2001066701. The next prime is 2001066731. The reversal of 2001066729 is 9276601002.

It is not a de Polignac number, because 2001066729 - 2⁷ = 2001066601 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001066729.

It is not an unprimeable number, because it can be changed into a prime (2001066329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1034247 + ... + 1036179.

It is an arithmetic number, because the mean of its divisors is an integer number (88016340).

Almost surely, 2^2001066729 is an apocalyptic number.

2001066729 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2001066729 is a deficient number, since it is larger than the sum of its proper divisors (815456151).

2001066729 is a wasteful number, since it uses less digits than its factorization.

2001066729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 2001066729 is about 44733.2843529290. The cubic root of 2001066729 is about 1260.1450091359.

The spelling of 2001066729 in words is "two billion, one million, sixty-six thousand, seven hundred twenty-nine".