266660416 has 28 divisors (see below), whose sum is σ = 577260720. Its totient is φ = 121208960.

The previous prime is 266660411. The next prime is 266660431. The reversal of 266660416 is 614066662.

266660416 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-2 number, since 2×266660416² = 142215554922586112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266660411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188686 + ... + 190093.

Almost surely, 2^266660416 is an apocalyptic number.

It is an amenable number.

266660416 is an abundant number, since it is smaller than the sum of its proper divisors (310600304).

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

266660416 is a wasteful number, since it uses less digits than its factorization.

266660416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378802 (or 378792 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 266660416 is about 16329.7402306344. The cubic root of 266660416 is about 643.6545605709.

The spelling of 266660416 in words is "two hundred sixty-six million, six hundred sixty thousand, four hundred sixteen".