266246005 has 16 divisors (see below), whose sum is σ = 327984048. Its totient is φ = 207360000.

The previous prime is 266245997. The next prime is 266246051. The reversal of 266246005 is 500642662.

It can be written as a sum of positive squares in 8 ways, for example, as 2735716 + 263510289 = 1654^2 + 16233^2 .

It is not a de Polignac number, because 266246005 - 2³ = 266245997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122125 + ... + 124285.

It is an arithmetic number, because the mean of its divisors is an integer number (20499003).

Almost surely, 2^266246005 is an apocalyptic number.

It is an amenable number.

266246005 is a deficient number, since it is larger than the sum of its proper divisors (61738043).

266246005 is a wasteful number, since it uses less digits than its factorization.

266246005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 266246005 is about 16317.0464545518. The cubic root of 266246005 is about 643.3209579681.

Adding to 266246005 its reverse (500642662), we get a palindrome (766888667).

The spelling of 266246005 in words is "two hundred sixty-six million, two hundred forty-six thousand, five".