2666287587 has 16 divisors (see below), whose sum is σ = 3706076160. Its totient is φ = 1703148000.

The previous prime is 2666287577. The next prime is 2666287607. The reversal of 2666287587 is 7857826662.

It is a happy number.

It is not a de Polignac number, because 2666287587 - 2⁴ = 2666287571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2666287577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132537 + ... + 151322.

It is an arithmetic number, because the mean of its divisors is an integer number (231629760).

Almost surely, 2^2666287587 is an apocalyptic number.

2666287587 is a deficient number, since it is larger than the sum of its proper divisors (1039788573).

2666287587 is a wasteful number, since it uses less digits than its factorization.

2666287587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283994.

The product of its digits is 13547520, while the sum is 57.

The square root of 2666287587 is about 51636.1073958911. The cubic root of 2666287587 is about 1386.6568357972.

The spelling of 2666287587 in words is "two billion, six hundred sixty-six million, two hundred eighty-seven thousand, five hundred eighty-seven".