2006420623 has 2 divisors, whose sum is σ = 2006420624. Its totient is φ = 2006420622.

The previous prime is 2006420621. The next prime is 2006420639. The reversal of 2006420623 is 3260246002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2006420623 - 2¹ = 2006420621 is a prime.

Together with 2006420621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2006420621) 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, 1003210311 + 1003210312.

It is an arithmetic number, because the mean of its divisors is an integer number (1003210312).

Almost surely, 2^2006420623 is an apocalyptic number.

2006420623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006420623 is an equidigital number, since it uses as much as digits as its factorization.

2006420623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2006420623 is about 44793.0867768677. The cubic root of 2006420623 is about 1261.2678560442.

Adding to 2006420623 its reverse (3260246002), we get a palindrome (5266666625).

The spelling of 2006420623 in words is "two billion, six million, four hundred twenty thousand, six hundred twenty-three".