266742601 has 2 divisors, whose sum is σ = 266742602. Its totient is φ = 266742600.

The previous prime is 266742589. The next prime is 266742629. The reversal of 266742601 is 106247662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228735376 + 38007225 = 15124^2 + 6165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266742601 is a prime.

It is equal to p_14543665 and since 266742601 and 14543665 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 (266742001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133371300 + 133371301.

It is an arithmetic number, because the mean of its divisors is an integer number (133371301).

Almost surely, 2^266742601 is an apocalyptic number.

It is an amenable number.

266742601 is a deficient number, since it is larger than the sum of its proper divisors (1).

266742601 is an equidigital number, since it uses as much as digits as its factorization.

266742601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 266742601 is about 16332.2564576974. The cubic root of 266742601 is about 643.7206787663.

The spelling of 266742601 in words is "two hundred sixty-six million, seven hundred forty-two thousand, six hundred one".