266790973 has 4 divisors (see below), whose sum is σ = 267092640. Its totient is φ = 266489308.

The previous prime is 266790959. The next prime is 266791009. The reversal of 266790973 is 379097662.

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 266790973 - 2²⁵ = 233236541 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266790773) 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, 149503 + ... + 151276.

It is an arithmetic number, because the mean of its divisors is an integer number (66773160).

Almost surely, 2^266790973 is an apocalyptic number.

It is an amenable number.

266790973 is a deficient number, since it is larger than the sum of its proper divisors (301667).

266790973 is an equidigital number, since it uses as much as digits as its factorization.

266790973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301666.

The product of its (nonzero) digits is 857304, while the sum is 49.

The square root of 266790973 is about 16333.7372637128. The cubic root of 266790973 is about 643.7595879051.

The spelling of 266790973 in words is "two hundred sixty-six million, seven hundred ninety thousand, nine hundred seventy-three".