266807941 has 2 divisors, whose sum is σ = 266807942. Its totient is φ = 266807940.

The previous prime is 266807881. The next prime is 266807987. The reversal of 266807941 is 149708662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188485441 + 78322500 = 13729^2 + 8850^2 .

It is a cyclic number.

It is not a de Polignac number, because 266807941 - 2⁷ = 266807813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266807041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133403970 + 133403971.

It is an arithmetic number, because the mean of its divisors is an integer number (133403971).

Almost surely, 2^266807941 is an apocalyptic number.

It is an amenable number.

266807941 is a deficient number, since it is larger than the sum of its proper divisors (1).

266807941 is an equidigital number, since it uses as much as digits as its factorization.

266807941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 266807941 is about 16334.2566711804. The cubic root of 266807941 is about 643.7732353947.

The spelling of 266807941 in words is "two hundred sixty-six million, eight hundred seven thousand, nine hundred forty-one".