266854564 has 6 divisors (see below), whose sum is σ = 466995494. Its totient is φ = 133427280.

The previous prime is 266854561. The next prime is 266854571. The reversal of 266854564 is 465458662.

It can be written as a sum of positive squares in only one way, i.e., 134374464 + 132480100 = 11592^2 + 11510^2 .

It is a super-2 number, since 2×266854564² = 142422716655260192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266854561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33356817 + ... + 33356824.

Almost surely, 2^266854564 is an apocalyptic number.

It is an amenable number.

266854564 is a deficient number, since it is larger than the sum of its proper divisors (200140930).

266854564 is a wasteful number, since it uses less digits than its factorization.

266854564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66713645 (or 66713643 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 46.

The square root of 266854564 is about 16335.6837628549. The cubic root of 266854564 is about 643.8107316443.

The spelling of 266854564 in words is "two hundred sixty-six million, eight hundred fifty-four thousand, five hundred sixty-four".