266563245 has 16 divisors (see below), whose sum is σ = 459309312. Its totient is φ = 131231040.

The previous prime is 266563243. The next prime is 266563249. The reversal of 266563245 is 542365662.

It is not a de Polignac number, because 266563245 - 2¹ = 266563243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266563243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683301 + ... + 683690.

It is an arithmetic number, because the mean of its divisors is an integer number (28706832).

Almost surely, 2^266563245 is an apocalyptic number.

It is an amenable number.

266563245 is a deficient number, since it is larger than the sum of its proper divisors (192746067).

266563245 is a wasteful number, since it uses less digits than its factorization.

266563245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367012.

The product of its digits is 259200, while the sum is 39.

The square root of 266563245 is about 16326.7646825695. The cubic root of 266563245 is about 643.5763685431.

The spelling of 266563245 in words is "two hundred sixty-six million, five hundred sixty-three thousand, two hundred forty-five".