266748001 has 4 divisors (see below), whose sum is σ = 287267092. Its totient is φ = 246228912.

The previous prime is 266747989. The next prime is 266748017. The reversal of 266748001 is 100847662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17139600 + 249608401 = 4140^2 + 15799^2 .

It is a cyclic number.

It is not a de Polignac number, because 266748001 - 2¹¹ = 266745953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266748101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10259526 + ... + 10259551.

It is an arithmetic number, because the mean of its divisors is an integer number (71816773).

Almost surely, 2^266748001 is an apocalyptic number.

It is an amenable number.

266748001 is a deficient number, since it is larger than the sum of its proper divisors (20519091).

266748001 is a wasteful number, since it uses less digits than its factorization.

266748001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20519090.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 266748001 is about 16332.4217738828. The cubic root of 266748001 is about 643.7250226146.

The spelling of 266748001 in words is "two hundred sixty-six million, seven hundred forty-eight thousand, one".