266945760 has 192 divisors, whose sum is σ = 950564160. Its totient is φ = 69949440.

The previous prime is 266945741. The next prime is 266945761. The reversal of 266945760 is 67549662.

266945760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266945761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263014 + ... + 264026.

It is an arithmetic number, because the mean of its divisors is an integer number (4950855).

Almost surely, 2^266945760 is an apocalyptic number.

266945760 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 266945760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (475282080).

266945760 is an abundant number, since it is smaller than the sum of its proper divisors (683618400).

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

266945760 is a wasteful number, since it uses less digits than its factorization.

266945760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 266945760 is about 16338.4748370220. The cubic root of 266945760 is about 643.8840628197.

The spelling of 266945760 in words is "two hundred sixty-six million, nine hundred forty-five thousand, seven hundred sixty".