2008778663 has 2 divisors, whose sum is σ = 2008778664. Its totient is φ = 2008778662.

The previous prime is 2008778609. The next prime is 2008778677. The reversal of 2008778663 is 3668778002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2008778663 - 2¹⁶ = 2008713127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2008778963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004389331 + 1004389332.

It is an arithmetic number, because the mean of its divisors is an integer number (1004389332).

Almost surely, 2^2008778663 is an apocalyptic number.

2008778663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2008778663 is an equidigital number, since it uses as much as digits as its factorization.

2008778663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 2008778663 is about 44819.4005203104. The cubic root of 2008778663 is about 1261.7617630666.

The spelling of 2008778663 in words is "two billion, eight million, seven hundred seventy-eight thousand, six hundred sixty-three".