1266493 has 2 divisors, whose sum is σ = 1266494. Its totient is φ = 1266492.

The previous prime is 1266491. The next prime is 1266511. The reversal of 1266493 is 3946621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 994009 + 272484 = 997^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 1266493 - 2¹ = 1266491 is a prime.

Together with 1266491, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 1 + 2¹⁵ + 6³ + 6⁵ + 4¹⁰ + 9 + 3¹¹ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633246 + 633247.

It is an arithmetic number, because the mean of its divisors is an integer number (633247).

2^1266493 is an apocalyptic number.

It is an amenable number.

1266493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266493 is an equidigital number, since it uses as much as digits as its factorization.

1266493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 1266493 is about 1125.3857116562. The cubic root of 1266493 is about 108.1934404703.

The spelling of 1266493 in words is "one million, two hundred sixty-six thousand, four hundred ninety-three".