266166664 has 16 divisors (see below), whose sum is σ = 503642700. Its totient is φ = 131861952.

The previous prime is 266166647. The next prime is 266166683. The reversal of 266166664 is 466661662.

It can be written as a sum of positive squares in 2 ways, for example, as 257345764 + 8820900 = 16042^2 + 2970^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 266166664.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151747 + ... + 153490.

Almost surely, 2^266166664 is an apocalyptic number.

It is an amenable number.

266166664 is a deficient number, since it is larger than the sum of its proper divisors (237476036).

266166664 is a wasteful number, since it uses less digits than its factorization.

266166664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305352 (or 305348 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

The square root of 266166664 is about 16314.6150429607. The cubic root of 266166664 is about 643.2570486535.

The spelling of 266166664 in words is "two hundred sixty-six million, one hundred sixty-six thousand, six hundred sixty-four".