2666987087 has 4 divisors (see below), whose sum is σ = 2669028936. Its totient is φ = 2664945240.

The previous prime is 2666987077. The next prime is 2666987093. The reversal of 2666987087 is 7807896662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2666987087 - 2⁸ = 2666986831 is a prime.

It is a super-2 number, since 2×2666987087² = 14225640244449491138, 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 (2666987077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018964 + ... + 1021577.

It is an arithmetic number, because the mean of its divisors is an integer number (667257234).

Almost surely, 2^2666987087 is an apocalyptic number.

2666987087 is a deficient number, since it is larger than the sum of its proper divisors (2041849).

2666987087 is a wasteful number, since it uses less digits than its factorization.

2666987087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041848.

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

The square root of 2666987087 is about 51642.8803127788. The cubic root of 2666987087 is about 1386.7780882395.

The spelling of 2666987087 in words is "two billion, six hundred sixty-six million, nine hundred eighty-seven thousand, eighty-seven".