2807666987 has 4 divisors (see below), whose sum is σ = 2904483120. Its totient is φ = 2710850856.

The previous prime is 2807666941. The next prime is 2807666989. The reversal of 2807666987 is 7896667082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7896667082 = 2 ⋅3948333541.

It is a cyclic number.

It is not a de Polignac number, because 2807666987 - 2⁶ = 2807666923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2807666989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48408023 + ... + 48408080.

It is an arithmetic number, because the mean of its divisors is an integer number (726120780).

Almost surely, 2^2807666987 is an apocalyptic number.

2807666987 is a deficient number, since it is larger than the sum of its proper divisors (96816133).

2807666987 is an equidigital number, since it uses as much as digits as its factorization.

2807666987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96816132.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The square root of 2807666987 is about 52987.4229133669. The cubic root of 2807666987 is about 1410.7450394149.

The spelling of 2807666987 in words is "two billion, eight hundred seven million, six hundred sixty-six thousand, nine hundred eighty-seven".