266164533 has 48 divisors (see below), whose sum is σ = 413652096. Its totient is φ = 164545920.

The previous prime is 266164531. The next prime is 266164553. The reversal of 266164533 is 335461662.

266164533 is a `hidden beast` number, since 2 + 6 + 6 + 1 + 645 + 3 + 3 = 666.

It is not a de Polignac number, because 266164533 - 2¹ = 266164531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266164531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1350991 + ... + 1351187.

It is an arithmetic number, because the mean of its divisors is an integer number (8617752).

Almost surely, 2^266164533 is an apocalyptic number.

266164533 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

266164533 is a deficient number, since it is larger than the sum of its proper divisors (147487563).

266164533 is a wasteful number, since it uses less digits than its factorization.

266164533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 391 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 266164533 is about 16314.5497332902. The cubic root of 266164533 is about 643.2553319542.

The spelling of 266164533 in words is "two hundred sixty-six million, one hundred sixty-four thousand, five hundred thirty-three".