266399113 has 4 divisors (see below), whose sum is σ = 266439888. Its totient is φ = 266358340.

The previous prime is 266399069. The next prime is 266399131. The reversal of 266399113 is 311993662.

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.

It is a cyclic number.

It is not a de Polignac number, because 266399113 - 2¹³ = 266390921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266399153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8131 + ... + 24472.

It is an arithmetic number, because the mean of its divisors is an integer number (66609972).

Almost surely, 2^266399113 is an apocalyptic number.

It is an amenable number.

266399113 is a deficient number, since it is larger than the sum of its proper divisors (40775).

266399113 is an equidigital number, since it uses as much as digits as its factorization.

266399113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40774.

The product of its digits is 52488, while the sum is 40.

The square root of 266399113 is about 16321.7374381528. The cubic root of 266399113 is about 643.4442508485. Note that the first 3 decimals are identical.

The spelling of 266399113 in words is "two hundred sixty-six million, three hundred ninety-nine thousand, one hundred thirteen".