2008778677 has 2 divisors, whose sum is σ = 2008778678. Its totient is φ = 2008778676.

The previous prime is 2008778663. The next prime is 2008778713. The reversal of 2008778677 is 7768778002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1814845201 + 193933476 = 42601^2 + 13926^2 .

It is a cyclic number.

It is not a de Polignac number, because 2008778677 - 2¹⁹ = 2008254389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2008778077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004389338 + 1004389339.

It is an arithmetic number, because the mean of its divisors is an integer number (1004389339).

Almost surely, 2^2008778677 is an apocalyptic number.

It is an amenable number.

2008778677 is a deficient number, since it is larger than the sum of its proper divisors (1).

2008778677 is an equidigital number, since it uses as much as digits as its factorization.

2008778677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1843968, while the sum is 52.

The square root of 2008778677 is about 44819.4006764928. The cubic root of 2008778677 is about 1261.7617659978.

The spelling of 2008778677 in words is "two billion, eight million, seven hundred seventy-eight thousand, six hundred seventy-seven".