1266679 has 4 divisors (see below), whose sum is σ = 1321776. Its totient is φ = 1211584.

The previous prime is 1266677. The next prime is 1266719. The reversal of 1266679 is 9766621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9766621 = 229 ⋅42649.

It is a cyclic number.

It is not a de Polignac number, because 1266679 - 2¹ = 1266677 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27514 + ... + 27559.

It is an arithmetic number, because the mean of its divisors is an integer number (330444).

2^1266679 is an apocalyptic number.

1266679 is a deficient number, since it is larger than the sum of its proper divisors (55097).

1266679 is an equidigital number, since it uses as much as digits as its factorization.

1266679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55096.

The product of its digits is 27216, while the sum is 37.

The square root of 1266679 is about 1125.4683469561. The cubic root of 1266679 is about 108.1987367214.

The spelling of 1266679 in words is "one million, two hundred sixty-six thousand, six hundred seventy-nine".