266775960 has 192 divisors, whose sum is σ = 926956800. Its totient is φ = 61205760.

The previous prime is 266775947. The next prime is 266775961. The reversal of 266775960 is 69577662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266775961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 275397 + ... + 276363.

It is an arithmetic number, because the mean of its divisors is an integer number (4827900).

Almost surely, 2^266775960 is an apocalyptic number.

266775960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266775960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463478400).

266775960 is an abundant number, since it is smaller than the sum of its proper divisors (660180840).

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

266775960 is a wasteful number, since it uses less digits than its factorization.

266775960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 48.

The square root of 266775960 is about 16333.2776869800. The cubic root of 266775960 is about 643.7475123541.

The spelling of 266775960 in words is "two hundred sixty-six million, seven hundred seventy-five thousand, nine hundred sixty".