266598 has 16 divisors (see below), whose sum is σ = 592560. Its totient is φ = 88848.

The previous prime is 266587. The next prime is 266599. The reversal of 266598 is 895662.

266598 is a `hidden beast` number, since 2 + 66 + 598 = 666.

It is a d-powerful number, because it can be written as 2¹⁸ + 6² + 5² + 6³ + 9² + 8⁴ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 266598.

It is not an unprimeable number, because it can be changed into a prime (266599) by changing a digit.

266598 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2415 + ... + 2522.

It is an arithmetic number, because the mean of its divisors is an integer number (37035).

2²⁶⁶⁵⁹⁸ is an apocalyptic number.

266598 is an abundant number, since it is smaller than the sum of its proper divisors (325962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266598 is a wasteful number, since it uses less digits than its factorization.

266598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4948 (or 4942 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 266598 is about 516.3312889996. The cubic root of 266598 is about 64.3604337546.

The spelling of 266598 in words is "two hundred sixty-six thousand, five hundred ninety-eight".