266072257 has 16 divisors (see below), whose sum is σ = 318827520. Its totient is φ = 219186000.

The previous prime is 266072251. The next prime is 266072263. The reversal of 266072257 is 752270662.

It is an interprime number because it is at equal distance from previous prime (266072251) and next prime (266072263).

It is not a de Polignac number, because 266072257 - 2¹¹ = 266070209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266072251) 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 in 15 ways as a sum of consecutive naturals, for example, 22869 + ... + 32482.

It is an arithmetic number, because the mean of its divisors is an integer number (19926720).

Almost surely, 2^266072257 is an apocalyptic number.

It is an amenable number.

266072257 is a deficient number, since it is larger than the sum of its proper divisors (52755263).

266072257 is a wasteful number, since it uses less digits than its factorization.

266072257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55404.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 266072257 is about 16311.7214603487. The cubic root of 266072257 is about 643.1809871005.

The spelling of 266072257 in words is "two hundred sixty-six million, seventy-two thousand, two hundred fifty-seven".