266610361 has 2 divisors, whose sum is σ = 266610362. Its totient is φ = 266610360.

The previous prime is 266610349. The next prime is 266610389. The reversal of 266610361 is 163016662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191684025 + 74926336 = 13845^2 + 8656^2 .

It is a cyclic number.

It is not a de Polignac number, because 266610361 - 2¹¹ = 266608313 is a prime.

It is not a weakly prime, because it can be changed into another prime (266610061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133305180 + 133305181.

It is an arithmetic number, because the mean of its divisors is an integer number (133305181).

Almost surely, 2^266610361 is an apocalyptic number.

It is an amenable number.

266610361 is a deficient number, since it is larger than the sum of its proper divisors (1).

266610361 is an equidigital number, since it uses as much as digits as its factorization.

266610361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 266610361 is about 16328.2075256288. The cubic root of 266610361 is about 643.6142844454.

The spelling of 266610361 in words is "two hundred sixty-six million, six hundred ten thousand, three hundred sixty-one".