1166037685 has 4 divisors (see below), whose sum is σ = 1399245228. Its totient is φ = 932830144.

The previous prime is 1166037671. The next prime is 1166037731. The reversal of 1166037685 is 5867306611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 928908484 + 237129201 = 30478^2 + 15399^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166037685 - 2⁷ = 1166037557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116603764 + ... + 116603773.

It is an arithmetic number, because the mean of its divisors is an integer number (349811307).

Almost surely, 2^1166037685 is an apocalyptic number.

It is an amenable number.

1166037685 is a deficient number, since it is larger than the sum of its proper divisors (233207543).

1166037685 is an equidigital number, since it uses as much as digits as its factorization.

1166037685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233207542.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 1166037685 is about 34147.2939630654. The cubic root of 1166037685 is about 1052.5373811064.

The spelling of 1166037685 in words is "one billion, one hundred sixty-six million, thirty-seven thousand, six hundred eighty-five".