266875664 has 30 divisors (see below), whose sum is σ = 568355550. Its totient is φ = 121306240.

The previous prime is 266875657. The next prime is 266875699. The reversal of 266875664 is 466578662.

It is a happy number.

266875664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 257923600 + 8952064 = 16060^2 + 2992^2 .

It is a super-3 number, since 3×266875664³ (a number of 26 digits) contains 333 as substring.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66989 + ... + 70860.

It is an arithmetic number, because the mean of its divisors is an integer number (18945185).

Almost surely, 2^266875664 is an apocalyptic number.

It is an amenable number.

266875664 is an abundant number, since it is smaller than the sum of its proper divisors (301479886).

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

266875664 is a wasteful number, since it uses less digits than its factorization.

266875664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137879 (or 137862 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

The square root of 266875664 is about 16336.3295755197. The cubic root of 266875664 is about 643.8276997488.

The spelling of 266875664 in words is "two hundred sixty-six million, eight hundred seventy-five thousand, six hundred sixty-four".