2666774887 has 16 divisors (see below), whose sum is σ = 3396867840. Its totient is φ = 2038117248.

The previous prime is 2666774879. The next prime is 2666774893. The reversal of 2666774887 is 7884776662.

It is a cyclic number.

It is not a de Polignac number, because 2666774887 - 2³ = 2666774879 is a prime.

It is a super-2 number, since 2×2666774887² = 14223376595867725538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666774827) 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 in 15 ways as a sum of consecutive naturals, for example, 587473 + ... + 591994.

It is an arithmetic number, because the mean of its divisors is an integer number (212304240).

Almost surely, 2^2666774887 is an apocalyptic number.

2666774887 is a deficient number, since it is larger than the sum of its proper divisors (730092953).

2666774887 is a wasteful number, since it uses less digits than its factorization.

2666774887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179510.

The product of its digits is 37933056, while the sum is 61.

The square root of 2666774887 is about 51640.8257776732. The cubic root of 2666774887 is about 1386.7413073946.

The spelling of 2666774887 in words is "two billion, six hundred sixty-six million, seven hundred seventy-four thousand, eight hundred eighty-seven".