266116587 has 16 divisors (see below), whose sum is σ = 393427200. Its totient is φ = 158637600.

The previous prime is 266116583. The next prime is 266116621. The reversal of 266116587 is 785611662.

It is not a de Polignac number, because 266116587 - 2² = 266116583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266116583) 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, 64087 + ... + 68112.

It is an arithmetic number, because the mean of its divisors is an integer number (24589200).

Almost surely, 2^266116587 is an apocalyptic number.

266116587 is a deficient number, since it is larger than the sum of its proper divisors (127310613).

266116587 is a wasteful number, since it uses less digits than its factorization.

266116587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132274.

The product of its digits is 120960, while the sum is 42.

The square root of 266116587 is about 16313.0802425538. The cubic root of 266116587 is about 643.2167050043.

The spelling of 266116587 in words is "two hundred sixty-six million, one hundred sixteen thousand, five hundred eighty-seven".