1266611 has 2 divisors, whose sum is σ = 1266612. Its totient is φ = 1266610.

The previous prime is 1266593. The next prime is 1266631. The reversal of 1266611 is 1166621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1266611 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1266631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633305 + 633306.

It is an arithmetic number, because the mean of its divisors is an integer number (633306).

2^1266611 is an apocalyptic number.

1266611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266611 is an equidigital number, since it uses as much as digits as its factorization.

1266611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 1266611 is about 1125.4381369049. The cubic root of 1266611 is about 108.1968005177.

The spelling of 1266611 in words is "one million, two hundred sixty-six thousand, six hundred eleven".