1166672681 has 16 divisors (see below), whose sum is σ = 1213864704. Its totient is φ = 1120621824.

The previous prime is 1166672627. The next prime is 1166672699. The reversal of 1166672681 is 1862766611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166672681 is a prime.

It is a super-2 number, since 2×1166672681² = 2722250289183455522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1166672621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567251 + ... + 569303.

It is an arithmetic number, because the mean of its divisors is an integer number (75866544).

Almost surely, 2^1166672681 is an apocalyptic number.

It is an amenable number.

1166672681 is a deficient number, since it is larger than the sum of its proper divisors (47192023).

1166672681 is a wasteful number, since it uses less digits than its factorization.

1166672681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320.

The product of its digits is 145152, while the sum is 44.

The square root of 1166672681 is about 34156.5905939103. The cubic root of 1166672681 is about 1052.7284085916.

The spelling of 1166672681 in words is "one billion, one hundred sixty-six million, six hundred seventy-two thousand, six hundred eighty-one".