266601473 has 2 divisors, whose sum is σ = 266601474. Its totient is φ = 266601472.

The previous prime is 266601451. The next prime is 266601527. The reversal of 266601473 is 374106662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247999504 + 18601969 = 15748^2 + 4313^2 .

It is a cyclic number.

It is not a de Polignac number, because 266601473 - 2⁶ = 266601409 is a prime.

It is equal to p_14536394 and since 266601473 and 14536394 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (266601173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133300736 + 133300737.

It is an arithmetic number, because the mean of its divisors is an integer number (133300737).

Almost surely, 2^266601473 is an apocalyptic number.

It is an amenable number.

266601473 is a deficient number, since it is larger than the sum of its proper divisors (1).

266601473 is an equidigital number, since it uses as much as digits as its factorization.

266601473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 266601473 is about 16327.9353563150. The cubic root of 266601473 is about 643.6071323011.

The spelling of 266601473 in words is "two hundred sixty-six million, six hundred one thousand, four hundred seventy-three".