2006635637 has 2 divisors, whose sum is σ = 2006635638. Its totient is φ = 2006635636.

The previous prime is 2006635627. The next prime is 2006635717. The reversal of 2006635637 is 7365366002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2006233681 + 401956 = 44791^2 + 634^2 .

It is a cyclic number.

It is not a de Polignac number, because 2006635637 - 2⁶ = 2006635573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2006635637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2006635627) 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, 1003317818 + 1003317819.

It is an arithmetic number, because the mean of its divisors is an integer number (1003317819).

Almost surely, 2^2006635637 is an apocalyptic number.

It is an amenable number.

2006635637 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006635637 is an equidigital number, since it uses as much as digits as its factorization.

2006635637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 38.

The square root of 2006635637 is about 44795.4867927563. The cubic root of 2006635637 is about 1261.3129081728.

The spelling of 2006635637 in words is "two billion, six million, six hundred thirty-five thousand, six hundred thirty-seven".