2663879917 has 2 divisors, whose sum is σ = 2663879918. Its totient is φ = 2663879916.

The previous prime is 2663879909. The next prime is 2663879929. The reversal of 2663879917 is 7199783662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2601612036 + 62267881 = 51006^2 + 7891^2 .

It is a cyclic number.

It is not a de Polignac number, because 2663879917 - 2³ = 2663879909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2663879017) 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, 1331939958 + 1331939959.

It is an arithmetic number, because the mean of its divisors is an integer number (1331939959).

Almost surely, 2^2663879917 is an apocalyptic number.

It is an amenable number.

2663879917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2663879917 is an equidigital number, since it uses as much as digits as its factorization.

2663879917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 58.

The square root of 2663879917 is about 51612.7883087128. The cubic root of 2663879917 is about 1386.2393242589.

The spelling of 2663879917 in words is "two billion, six hundred sixty-three million, eight hundred seventy-nine thousand, nine hundred seventeen".