266248163 has 4 divisors (see below), whose sum is σ = 266296800. Its totient is φ = 266199528.

The previous prime is 266248133. The next prime is 266248231. The reversal of 266248163 is 361842662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361842662 = 2 ⋅180921331.

It is a cyclic number.

It is not a de Polignac number, because 266248163 - 2²² = 262053859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266248123) 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, 14888 + ... + 27461.

It is an arithmetic number, because the mean of its divisors is an integer number (66574200).

Almost surely, 2^266248163 is an apocalyptic number.

266248163 is a deficient number, since it is larger than the sum of its proper divisors (48637).

266248163 is an equidigital number, since it uses as much as digits as its factorization.

266248163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48636.

The product of its digits is 82944, while the sum is 38.

The square root of 266248163 is about 16317.1125815813. The cubic root of 266248163 is about 643.3226960635.

The spelling of 266248163 in words is "two hundred sixty-six million, two hundred forty-eight thousand, one hundred sixty-three".