266691041 has 2 divisors, whose sum is σ = 266691042. Its totient is φ = 266691040.

The previous prime is 266691023. The next prime is 266691083. The reversal of 266691041 is 140196662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210366016 + 56325025 = 14504^2 + 7505^2 .

It is a cyclic number.

It is not a de Polignac number, because 266691041 - 2²² = 262496737 is a prime.

It is a super-2 number, since 2×266691041² = 142248222699327362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266690992 and 266691010.

It is not a weakly prime, because it can be changed into another prime (266691541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133345520 + 133345521.

It is an arithmetic number, because the mean of its divisors is an integer number (133345521).

Almost surely, 2^266691041 is an apocalyptic number.

It is an amenable number.

266691041 is a deficient number, since it is larger than the sum of its proper divisors (1).

266691041 is an equidigital number, since it uses as much as digits as its factorization.

266691041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 266691041 is about 16330.6779099950. The cubic root of 266691041 is about 643.6792001064.

The spelling of 266691041 in words is "two hundred sixty-six million, six hundred ninety-one thousand, forty-one".