266249313 has 24 divisors (see below), whose sum is σ = 428478336. Its totient is φ = 157927200.

The previous prime is 266249303. The next prime is 266249327. The reversal of 266249313 is 313942662.

266249313 is a `hidden beast` number, since 26 + 624 + 9 + 3 + 1 + 3 = 666.

It is not a de Polignac number, because 266249313 - 2⁵ = 266249281 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (266249303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23958 + ... + 33263.

It is an arithmetic number, because the mean of its divisors is an integer number (17853264).

Almost surely, 2^266249313 is an apocalyptic number.

It is an amenable number.

266249313 is a deficient number, since it is larger than the sum of its proper divisors (162229023).

266249313 is a wasteful number, since it uses less digits than its factorization.

266249313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57285 (or 57282 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 266249313 is about 16317.1478206211. The cubic root of 266249313 is about 643.3236222922.

It can be divided in two parts, 26624 and 9313, that added together give a cube (35937 = 33³).

The spelling of 266249313 in words is "two hundred sixty-six million, two hundred forty-nine thousand, three hundred thirteen".