1266560208 has 30 divisors (see below), whose sum is σ = 3544609874. Its totient is φ = 422186688.

The previous prime is 1266560201. The next prime is 1266560213. The reversal of 1266560208 is 8020656621.

1266560208 is a `hidden beast` number, since 12 + 66 + 560 + 20 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 933424704 + 333135504 = 30552^2 + 18252^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266560201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4397635 + ... + 4397922.

Almost surely, 2^1266560208 is an apocalyptic number.

1266560208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1266560208 is an abundant number, since it is smaller than the sum of its proper divisors (2278049666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266560208 is a wasteful number, since it uses less digits than its factorization.

1266560208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8795571 (or 8795562 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1266560208 is about 35588.7651935270. The cubic root of 1266560208 is about 1081.9535424217.

The spelling of 1266560208 in words is "one billion, two hundred sixty-six million, five hundred sixty thousand, two hundred eight".