2006656429 has 2 divisors, whose sum is σ = 2006656430. Its totient is φ = 2006656428.

The previous prime is 2006656411. The next prime is 2006656439. The reversal of 2006656429 is 9246566002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1077808900 + 928847529 = 32830^2 + 30477^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2006656429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2006656391 and 2006656400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2006656439) 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 as a sum of consecutive naturals, namely, 1003328214 + 1003328215.

It is an arithmetic number, because the mean of its divisors is an integer number (1003328215).

Almost surely, 2^2006656429 is an apocalyptic number.

It is an amenable number.

2006656429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006656429 is an equidigital number, since it uses as much as digits as its factorization.

2006656429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 2006656429 is about 44795.7188691062. The cubic root of 2006656429 is about 1261.3172645737.

The spelling of 2006656429 in words is "two billion, six million, six hundred fifty-six thousand, four hundred twenty-nine".