266626427 has 2 divisors, whose sum is σ = 266626428. Its totient is φ = 266626426.

The previous prime is 266626397. The next prime is 266626429. The reversal of 266626427 is 724626662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266626427 is a prime.

Together with 266626429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (266626429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133313213 + 133313214.

It is an arithmetic number, because the mean of its divisors is an integer number (133313214).

Almost surely, 2^266626427 is an apocalyptic number.

266626427 is a deficient number, since it is larger than the sum of its proper divisors (1).

266626427 is an equidigital number, since it uses as much as digits as its factorization.

266626427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 266626427 is about 16328.6994889366. The cubic root of 266626427 is about 643.6272122993.

The spelling of 266626427 in words is "two hundred sixty-six million, six hundred twenty-six thousand, four hundred twenty-seven".