266774493 has 16 divisors (see below), whose sum is σ = 378172800. Its totient is φ = 166905024.

The previous prime is 266774479. The next prime is 266774531. The reversal of 266774493 is 394477662.

It is not a de Polignac number, because 266774493 - 2⁹ = 266773981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266774423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32818 + ... + 40131.

It is an arithmetic number, because the mean of its divisors is an integer number (23635800).

Almost surely, 2^266774493 is an apocalyptic number.

266774493 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

266774493 is a deficient number, since it is larger than the sum of its proper divisors (111398307).

266774493 is a wasteful number, since it uses less digits than its factorization.

266774493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73028.

The product of its digits is 1524096, while the sum is 48.

The square root of 266774493 is about 16333.2327786020. The cubic root of 266774493 is about 643.7463323636.

The spelling of 266774493 in words is "two hundred sixty-six million, seven hundred seventy-four thousand, four hundred ninety-three".