266790873 has 4 divisors (see below), whose sum is σ = 355721168. Its totient is φ = 177860580.

The previous prime is 266790863. The next prime is 266790883. The reversal of 266790873 is 378097662.

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 an interprime number because it is at equal distance from previous prime (266790863) and next prime (266790883).

It is not a de Polignac number, because 266790873 - 2⁵ = 266790841 is a prime.

It is a super-2 number, since 2×266790873² = 142354739832204258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266790803) 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, 44465143 + ... + 44465148.

It is an arithmetic number, because the mean of its divisors is an integer number (88930292).

Almost surely, 2^266790873 is an apocalyptic number.

It is an amenable number.

266790873 is a deficient number, since it is larger than the sum of its proper divisors (88930295).

266790873 is an equidigital number, since it uses as much as digits as its factorization.

266790873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88930294.

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 266790873 is about 16333.7342025637. The cubic root of 266790873 is about 643.7595074726.

The spelling of 266790873 in words is "two hundred sixty-six million, seven hundred ninety thousand, eight hundred seventy-three".