2006656343 has 4 divisors (see below), whose sum is σ = 2008934928. Its totient is φ = 2004377760.

The previous prime is 2006656331. The next prime is 2006656369. The reversal of 2006656343 is 3436566002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3436566002 = 2 ⋅1718283001.

It is a cyclic number.

It is not a de Polignac number, because 2006656343 - 2⁸ = 2006656087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006656303) 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 3 ways as a sum of consecutive naturals, for example, 1137971 + ... + 1139732.

It is an arithmetic number, because the mean of its divisors is an integer number (502233732).

Almost surely, 2^2006656343 is an apocalyptic number.

2006656343 is a deficient number, since it is larger than the sum of its proper divisors (2278585).

2006656343 is an equidigital number, since it uses as much as digits as its factorization.

2006656343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278584.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 2006656343 is about 44795.7179091931. The cubic root of 2006656343 is about 1261.3172465547.

The spelling of 2006656343 in words is "two billion, six million, six hundred fifty-six thousand, three hundred forty-three".