2006143685 has 16 divisors (see below), whose sum is σ = 2962920576. Its totient is φ = 1269822528.

The previous prime is 2006143673. The next prime is 2006143793. The reversal of 2006143685 is 5863416002.

It is not a de Polignac number, because 2006143685 - 2²⁰ = 2005095109 is a prime.

It is a super-2 number, since 2×2006143685² = 8049224969730758450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2204099 + ... + 2205008.

It is an arithmetic number, because the mean of its divisors is an integer number (185182536).

Almost surely, 2^2006143685 is an apocalyptic number.

It is an amenable number.

2006143685 is a deficient number, since it is larger than the sum of its proper divisors (956776891).

2006143685 is a wasteful number, since it uses less digits than its factorization.

2006143685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409132.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 2006143685 is about 44789.9953672692. The cubic root of 2006143685 is about 1261.2098241664.

Adding to 2006143685 its reverse (5863416002), we get a palindrome (7869559687).

The spelling of 2006143685 in words is "two billion, six million, one hundred forty-three thousand, six hundred eighty-five".