1166885678 has 32 divisors (see below), whose sum is σ = 2120499648. Its totient is φ = 470131200.

The previous prime is 1166885677. The next prime is 1166885689. The reversal of 1166885678 is 8765886611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166885677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250208 + ... + 254828.

It is an arithmetic number, because the mean of its divisors is an integer number (66265614).

Almost surely, 2^1166885678 is an apocalyptic number.

1166885678 is a deficient number, since it is larger than the sum of its proper divisors (953613970).

1166885678 is a wasteful number, since it uses less digits than its factorization.

1166885678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5708.

The product of its digits is 3870720, while the sum is 56.

The square root of 1166885678 is about 34159.7084003948. The cubic root of 1166885678 is about 1052.7924695038.

The spelling of 1166885678 in words is "one billion, one hundred sixty-six million, eight hundred eighty-five thousand, six hundred seventy-eight".