1166471685 has 24 divisors (see below), whose sum is σ = 2096771040. Its totient is φ = 622117584.

The previous prime is 1166471641. The next prime is 1166471701. The reversal of 1166471685 is 5861746611.

1166471685 is a `hidden beast` number, since 116 + 6 + 471 + 68 + 5 = 666.

It is not a de Polignac number, because 1166471685 - 2²³ = 1158083077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1166471685.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 478815 + ... + 481244.

It is an arithmetic number, because the mean of its divisors is an integer number (87365460).

Almost surely, 2^1166471685 is an apocalyptic number.

1166471685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1166471685 is a deficient number, since it is larger than the sum of its proper divisors (930299355).

1166471685 is an frugal number, since it uses more digits than its factorization.

1166471685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960079 (or 960067 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 1166471685 is about 34153.6481945926. The cubic root of 1166471685 is about 1052.6679499457.

The spelling of 1166471685 in words is "one billion, one hundred sixty-six million, four hundred seventy-one thousand, six hundred eighty-five".