2066501663 has 2 divisors, whose sum is σ = 2066501664. Its totient is φ = 2066501662.

The previous prime is 2066501629. The next prime is 2066501699. The reversal of 2066501663 is 3661056602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2066501663 - 2⁶ = 2066501599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2066501863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033250831 + 1033250832.

It is an arithmetic number, because the mean of its divisors is an integer number (1033250832).

Almost surely, 2^2066501663 is an apocalyptic number.

2066501663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066501663 is an equidigital number, since it uses as much as digits as its factorization.

2066501663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 2066501663 is about 45458.7908220181. The cubic root of 2066501663 is about 1273.7335445501.

The spelling of 2066501663 in words is "two billion, sixty-six million, five hundred one thousand, six hundred sixty-three".