266540147 has 2 divisors, whose sum is σ = 266540148. Its totient is φ = 266540146.

The previous prime is 266540143. The next prime is 266540173. The reversal of 266540147 is 741045662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266540147 - 2² = 266540143 is a prime.

It is not a weakly prime, because it can be changed into another prime (266540143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133270073 + 133270074.

It is an arithmetic number, because the mean of its divisors is an integer number (133270074).

Almost surely, 2^266540147 is an apocalyptic number.

266540147 is a deficient number, since it is larger than the sum of its proper divisors (1).

266540147 is an equidigital number, since it uses as much as digits as its factorization.

266540147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 266540147 is about 16326.0573011367. The cubic root of 266540147 is about 643.5577791382.

The spelling of 266540147 in words is "two hundred sixty-six million, five hundred forty thousand, one hundred forty-seven".