266671417 has 2 divisors, whose sum is σ = 266671418. Its totient is φ = 266671416.

The previous prime is 266671399. The next prime is 266671439. The reversal of 266671417 is 714176662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205893801 + 60777616 = 14349^2 + 7796^2 .

It is a cyclic number.

It is not a de Polignac number, because 266671417 - 2²³ = 258282809 is a prime.

It is a super-2 number, since 2×266671417² = 142227289289575778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266671417.

It is not a weakly prime, because it can be changed into another prime (266674417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133335708 + 133335709.

It is an arithmetic number, because the mean of its divisors is an integer number (133335709).

Almost surely, 2^266671417 is an apocalyptic number.

It is an amenable number.

266671417 is a deficient number, since it is larger than the sum of its proper divisors (1).

266671417 is an equidigital number, since it uses as much as digits as its factorization.

266671417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 266671417 is about 16330.0770665665. The cubic root of 266671417 is about 643.6634117114.

The spelling of 266671417 in words is "two hundred sixty-six million, six hundred seventy-one thousand, four hundred seventeen".