2002005723 has 8 divisors (see below), whose sum is σ = 2676385600. Its totient is φ = 1331148168.

The previous prime is 2002005713. The next prime is 2002005751. The reversal of 2002005723 is 3275002002.

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

It is not a de Polignac number, because 2002005723 - 2¹⁰ = 2002004699 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2002005723.

It is not an unprimeable number, because it can be changed into a prime (2002005703) 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 7 ways as a sum of consecutive naturals, for example, 879253 + ... + 881526.

It is an arithmetic number, because the mean of its divisors is an integer number (334548200).

Almost surely, 2^2002005723 is an apocalyptic number.

2002005723 is a deficient number, since it is larger than the sum of its proper divisors (674379877).

2002005723 is a wasteful number, since it uses less digits than its factorization.

2002005723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761161.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 2002005723 is about 44743.7785954651. The cubic root of 2002005723 is about 1260.3420846177.

Adding to 2002005723 its reverse (3275002002), we get a palindrome (5277007725).

The spelling of 2002005723 in words is "two billion, two million, five thousand, seven hundred twenty-three".