1266611679 has 36 divisors (see below), whose sum is σ = 1922741184. Its totient is φ = 803398464.

The previous prime is 1266611677. The next prime is 1266611681. The reversal of 1266611679 is 9761166621.

It is an interprime number because it is at equal distance from previous prime (1266611677) and next prime (1266611681).

It is not a de Polignac number, because 1266611679 - 2¹ = 1266611677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266611677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1061107 + ... + 1062299.

Almost surely, 2^1266611679 is an apocalyptic number.

1266611679 is a deficient number, since it is larger than the sum of its proper divisors (656129505).

1266611679 is a wasteful number, since it uses less digits than its factorization.

1266611679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1442 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 1266611679 is about 35589.4883216941. The cubic root of 1266611679 is about 1081.9681985157.

The spelling of 1266611679 in words is "one billion, two hundred sixty-six million, six hundred eleven thousand, six hundred seventy-nine".