266066000 has 40 divisors (see below), whose sum is σ = 643352424. Its totient is φ = 106425600.

The previous prime is 266065993. The next prime is 266066011. The reversal of 266066000 is 660662.

It can be written as a sum of positive squares in 4 ways, for example, as 72522256 + 193543744 = 8516^2 + 13912^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×266066000² = 141582232712000000, which contains 22 as substring.

It is a congruent 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, 64517 + ... + 68516.

Almost surely, 2^266066000 is an apocalyptic number.

266066000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266066000 is an abundant number, since it is smaller than the sum of its proper divisors (377286424).

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

266066000 is a wasteful number, since it uses less digits than its factorization.

266066000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133056 (or 133040 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 266066000 is about 16311.5296646268. The cubic root of 266066000 is about 643.1759453435.

The spelling of 266066000 in words is "two hundred sixty-six million, sixty-six thousand".