266666916 has 24 divisors (see below), whose sum is σ = 623193984. Its totient is φ = 88750240.

The previous prime is 266666909. The next prime is 266666941. The reversal of 266666916 is 619666662.

It is a happy number.

266666916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×266666916³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9180 + ... + 24851.

It is an arithmetic number, because the mean of its divisors is an integer number (25966416).

Almost surely, 2^266666916 is an apocalyptic number.

It is an amenable number.

266666916 is an abundant number, since it is smaller than the sum of its proper divisors (356527068).

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

266666916 is a wasteful number, since it uses less digits than its factorization.

266666916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34691 (or 34689 counting only the distinct ones).

The product of its digits is 839808, while the sum is 48.

The square root of 266666916 is about 16329.9392527958. The cubic root of 266666916 is about 643.6597903443.

The spelling of 266666916 in words is "two hundred sixty-six million, six hundred sixty-six thousand, nine hundred sixteen".