266075880 has 192 divisors, whose sum is σ = 954426240. Its totient is φ = 59125248.

The previous prime is 266075879. The next prime is 266075881. The reversal of 266075880 is 88570662.

It is an interprime number because it is at equal distance from previous prime (266075879) and next prime (266075881).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266075881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 216949 + ... + 218171.

It is an arithmetic number, because the mean of its divisors is an integer number (4970970).

Almost surely, 2^266075880 is an apocalyptic number.

266075880 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 266075880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477213120).

266075880 is an abundant number, since it is smaller than the sum of its proper divisors (688350360).

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

266075880 is a wasteful number, since it uses less digits than its factorization.

266075880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288 (or 1277 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 266075880 is about 16311.8325150794. The cubic root of 266075880 is about 643.1839064004.

The spelling of 266075880 in words is "two hundred sixty-six million, seventy-five thousand, eight hundred eighty".