266528413 has 4 divisors (see below), whose sum is σ = 273029148. Its totient is φ = 260027680.

The previous prime is 266528351. The next prime is 266528477. The reversal of 266528413 is 314825662.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55756089 + 210772324 = 7467^2 + 14518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266528413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266528113) 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, 3250306 + ... + 3250387.

It is an arithmetic number, because the mean of its divisors is an integer number (68257287).

Almost surely, 2^266528413 is an apocalyptic number.

It is an amenable number.

266528413 is a deficient number, since it is larger than the sum of its proper divisors (6500735).

266528413 is an equidigital number, since it uses as much as digits as its factorization.

266528413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6500734.

The product of its digits is 69120, while the sum is 37.

The square root of 266528413 is about 16325.6979330135. The cubic root of 266528413 is about 643.5483351352.

The spelling of 266528413 in words is "two hundred sixty-six million, five hundred twenty-eight thousand, four hundred thirteen".