266001013 has 4 divisors (see below), whose sum is σ = 266431360. Its totient is φ = 265570668.

The previous prime is 266000953. The next prime is 266001017. The reversal of 266001013 is 310100662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310100662 = 2 ⋅155050331.

It is a cyclic number.

It is not a de Polignac number, because 266001013 - 2¹³ = 265992821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266001017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214245 + ... + 215482.

It is an arithmetic number, because the mean of its divisors is an integer number (66607840).

Almost surely, 2^266001013 is an apocalyptic number.

It is an amenable number.

266001013 is a deficient number, since it is larger than the sum of its proper divisors (430347).

266001013 is an equidigital number, since it uses as much as digits as its factorization.

266001013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430346.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 266001013 is about 16309.5374857781. The cubic root of 266001013 is about 643.1235755321.

Adding to 266001013 its reverse (310100662), we get a palindrome (576101675).

The spelling of 266001013 in words is "two hundred sixty-six million, one thousand, thirteen".