266864896 has 27 divisors (see below), whose sum is σ = 533209593. Its totient is φ = 133301760.

The previous prime is 266864881. The next prime is 266864909. The reversal of 266864896 is 698468662.

The square root of 266864896 is 16336.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 155351296 + 111513600 = 12464^2 + 10560^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 260866 + ... + 261886.

Almost surely, 2^266864896 is an apocalyptic number.

266864896 is the 16336-th square number.

It is an amenable number.

266864896 is a deficient number, since it is larger than the sum of its proper divisors (266344697).

266864896 is an frugal number, since it uses more digits than its factorization.

266864896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058 (or 1023 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 55.

The cubic root of 266864896 is about 643.8190404980.

The spelling of 266864896 in words is "two hundred sixty-six million, eight hundred sixty-four thousand, eight hundred ninety-six".