266133087 has 72 divisors (see below), whose sum is σ = 456934800. Its totient is φ = 152792640.

The previous prime is 266133071. The next prime is 266133089. The reversal of 266133087 is 780331662.

It is a happy number.

266133087 is a `hidden beast` number, since 2 + 6 + 613 + 30 + 8 + 7 = 666.

It is not a de Polignac number, because 266133087 - 2⁴ = 266133071 is a prime.

It is a super-2 number, since 2×266133087² = 141653639992299138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266133089) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5021353 + ... + 5021405.

Almost surely, 2^266133087 is an apocalyptic number.

266133087 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

266133087 is a deficient number, since it is larger than the sum of its proper divisors (190801713).

266133087 is a wasteful number, since it uses less digits than its factorization.

266133087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 266133087 is about 16313.5859638523. The cubic root of 266133087 is about 643.2299984964.

The spelling of 266133087 in words is "two hundred sixty-six million, one hundred thirty-three thousand, eighty-seven".