1266607 has 4 divisors (see below), whose sum is σ = 1282720. Its totient is φ = 1250496.

The previous prime is 1266593. The next prime is 1266611. The reversal of 1266607 is 7066621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7066621 = 139 ⋅50839.

It is a cyclic number.

It is not a de Polignac number, because 1266607 - 2¹¹ = 1264559 is a prime.

It is a Duffinian number.

1266607 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7938 + ... + 8095.

It is an arithmetic number, because the mean of its divisors is an integer number (320680).

2^1266607 is an apocalyptic number.

1266607 is a deficient number, since it is larger than the sum of its proper divisors (16113).

1266607 is an equidigital number, since it uses as much as digits as its factorization.

1266607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16112.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1266607 is about 1125.4363598178. The cubic root of 1266607 is about 108.1966866212.

The spelling of 1266607 in words is "one million, two hundred sixty-six thousand, six hundred seven".