266112987 has 16 divisors (see below), whose sum is σ = 406510080. Its totient is φ = 151687872.

The previous prime is 266112983. The next prime is 266113009. The reversal of 266112987 is 789211662.

It is not a de Polignac number, because 266112987 - 2² = 266112983 is a prime.

It is a super-2 number, since 2×266112987² = 141632243700124338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266112983) 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, 6903 + ... + 24080.

It is an arithmetic number, because the mean of its divisors is an integer number (25406880).

Almost surely, 2^266112987 is an apocalyptic number.

266112987 is a deficient number, since it is larger than the sum of its proper divisors (140397093).

266112987 is a wasteful number, since it uses less digits than its factorization.

266112987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31402.

The product of its digits is 72576, while the sum is 42.

The square root of 266112987 is about 16312.9699012779. The cubic root of 266112987 is about 643.2138045330.

The spelling of 266112987 in words is "two hundred sixty-six million, one hundred twelve thousand, nine hundred eighty-seven".