266329601 has 2 divisors, whose sum is σ = 266329602. Its totient is φ = 266329600.

The previous prime is 266329597. The next prime is 266329729. The reversal of 266329601 is 106923662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193210000 + 73119601 = 13900^2 + 8551^2 .

It is a cyclic number.

It is not a de Polignac number, because 266329601 - 2² = 266329597 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (266329501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133164800 + 133164801.

It is an arithmetic number, because the mean of its divisors is an integer number (133164801).

Almost surely, 2^266329601 is an apocalyptic number.

It is an amenable number.

266329601 is a deficient number, since it is larger than the sum of its proper divisors (1).

266329601 is an equidigital number, since it uses as much as digits as its factorization.

266329601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 266329601 is about 16319.6078690635. The cubic root of 266329601 is about 643.3882809580.

The spelling of 266329601 in words is "two hundred sixty-six million, three hundred twenty-nine thousand, six hundred one".