266720968 has 8 divisors (see below), whose sum is σ = 500101830. Its totient is φ = 133360480.

The previous prime is 266720957. The next prime is 266720969. The reversal of 266720968 is 869027662.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 264973284 + 1747684 = 16278^2 + 1322^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×266720968² = 142280149541714048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266720969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16670053 + ... + 16670068.

Almost surely, 2^266720968 is an apocalyptic number.

It is an amenable number.

266720968 is a deficient number, since it is larger than the sum of its proper divisors (233380862).

266720968 is a wasteful number, since it uses less digits than its factorization.

266720968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33340127 (or 33340123 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 266720968 is about 16331.5941659104. The cubic root of 266720968 is about 643.7032762393.

The spelling of 266720968 in words is "two hundred sixty-six million, seven hundred twenty thousand, nine hundred sixty-eight".