266605245 has 48 divisors (see below), whose sum is σ = 489677760. Its totient is φ = 133809408.

The previous prime is 266605243. The next prime is 266605277. The reversal of 266605245 is 542506662.

It is not a de Polignac number, because 266605245 - 2¹ = 266605243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266605243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138409 + ... + 140321.

It is an arithmetic number, because the mean of its divisors is an integer number (10201620).

Almost surely, 2^266605245 is an apocalyptic number.

It is an amenable number.

266605245 is a deficient number, since it is larger than the sum of its proper divisors (223072515).

266605245 is a wasteful number, since it uses less digits than its factorization.

266605245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106 (or 2103 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 266605245 is about 16328.0508634681. The cubic root of 266605245 is about 643.6101676364.

The spelling of 266605245 in words is "two hundred sixty-six million, six hundred five thousand, two hundred forty-five".