266632243 has 4 divisors (see below), whose sum is σ = 266955480. Its totient is φ = 266309008.

The previous prime is 266632213. The next prime is 266632259. The reversal of 266632243 is 342236662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 266632243 - 2¹³ = 266624051 is a prime.

It is a super-2 number, since 2×266632243² = 142185506014422098, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266632199 and 266632208.

It is not an unprimeable number, because it can be changed into a prime (266632213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160378 + ... + 162031.

It is an arithmetic number, because the mean of its divisors is an integer number (66738870).

Almost surely, 2^266632243 is an apocalyptic number.

266632243 is a deficient number, since it is larger than the sum of its proper divisors (323237).

266632243 is an equidigital number, since it uses as much as digits as its factorization.

266632243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323236.

The product of its digits is 62208, while the sum is 34.

The square root of 266632243 is about 16328.8775793072. The cubic root of 266632243 is about 643.6318921413.

The spelling of 266632243 in words is "two hundred sixty-six million, six hundred thirty-two thousand, two hundred forty-three".