1066505679 has 12 divisors (see below), whose sum is σ = 1590202432. Its totient is φ = 688068000.

The previous prime is 1066505669. The next prime is 1066505683. The reversal of 1066505679 is 9765056601.

1066505679 is a `hidden beast` number, since 10 + 66 + 505 + 6 + 79 = 666.

It is not a de Polignac number, because 1066505679 - 2¹¹ = 1066503631 is a prime.

It is a super-2 number, since 2×1066505679² = 2274868726678502082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066505669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1911022 + ... + 1911579.

Almost surely, 2^1066505679 is an apocalyptic number.

1066505679 is a deficient number, since it is larger than the sum of its proper divisors (523696753).

1066505679 is a wasteful number, since it uses less digits than its factorization.

1066505679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822638 (or 3822635 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 1066505679 is about 32657.3985338698. The cubic root of 1066505679 is about 1021.6945046187.

The spelling of 1066505679 in words is "one billion, sixty-six million, five hundred five thousand, six hundred seventy-nine".