266321066 has 16 divisors (see below), whose sum is σ = 440294400. Its totient is φ = 119806080.

The previous prime is 266321057. The next prime is 266321089. The reversal of 266321066 is 660123662.

It is a Curzon number.

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, 60266 + ... + 64533.

It is an arithmetic number, because the mean of its divisors is an integer number (27518400).

Almost surely, 2^266321066 is an apocalyptic number.

266321066 is a deficient number, since it is larger than the sum of its proper divisors (173973334).

266321066 is a wasteful number, since it uses less digits than its factorization.

266321066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124909.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 266321066 is about 16319.3463717148. The cubic root of 266321066 is about 643.3814080486.

The spelling of 266321066 in words is "two hundred sixty-six million, three hundred twenty-one thousand, sixty-six".