266321064 has 16 divisors (see below), whose sum is σ = 665802720. Its totient is φ = 88773680.

The previous prime is 266321057. The next prime is 266321089. The reversal of 266321064 is 460123662.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5548332 + ... + 5548379.

It is an arithmetic number, because the mean of its divisors is an integer number (41612670).

Almost surely, 2^266321064 is an apocalyptic number.

266321064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

266321064 is an abundant number, since it is smaller than the sum of its proper divisors (399481656).

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

266321064 is a wasteful number, since it uses less digits than its factorization.

266321064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11096720 (or 11096716 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 266321064 is about 16319.3463104378. The cubic root of 266321064 is about 643.3814064380.

The spelling of 266321064 in words is "two hundred sixty-six million, three hundred twenty-one thousand, sixty-four".