266842287 has 6 divisors (see below), whose sum is σ = 385438872. Its totient is φ = 177894852.

The previous prime is 266842273. The next prime is 266842313. The reversal of 266842287 is 782248662.

It is not a de Polignac number, because 266842287 - 2⁸ = 266842031 is a prime.

It is a super-2 number, since 2×266842287² = 142409612262780738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266842207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14824563 + ... + 14824580.

It is an arithmetic number, because the mean of its divisors is an integer number (64239812).

Almost surely, 2^266842287 is an apocalyptic number.

266842287 is a deficient number, since it is larger than the sum of its proper divisors (118596585).

266842287 is a wasteful number, since it uses less digits than its factorization.

266842287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29649149 (or 29649146 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 266842287 is about 16335.3079860773. The cubic root of 266842287 is about 643.8008583692.

The spelling of 266842287 in words is "two hundred sixty-six million, eight hundred forty-two thousand, two hundred eighty-seven".