266846985 has 12 divisors (see below), whose sum is σ = 462534852. Its totient is φ = 142318368.

The previous prime is 266846981. The next prime is 266846999. The reversal of 266846985 is 589648662.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64979721 + 201867264 = 8061^2 + 14208^2 .

It is not a de Polignac number, because 266846985 - 2² = 266846981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266846981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2964922 + ... + 2965011.

It is an arithmetic number, because the mean of its divisors is an integer number (38544571).

Almost surely, 2^266846985 is an apocalyptic number.

It is an amenable number.

266846985 is a deficient number, since it is larger than the sum of its proper divisors (195687867).

266846985 is a wasteful number, since it uses less digits than its factorization.

266846985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5929944 (or 5929941 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 266846985 is about 16335.4517843860. The cubic root of 266846985 is about 643.8046365793.

The spelling of 266846985 in words is "two hundred sixty-six million, eight hundred forty-six thousand, nine hundred eighty-five".