1166206906 has 8 divisors (see below), whose sum is σ = 1777987764. Its totient is φ = 573544320.

The previous prime is 1166206849. The next prime is 1166206907. The reversal of 1166206906 is 6096026611.

It can be written as a sum of positive squares in 2 ways, for example, as 813105225 + 353101681 = 28515^2 + 18791^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1166206907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4779415 + ... + 4779658.

Almost surely, 2^1166206906 is an apocalyptic number.

1166206906 is a deficient number, since it is larger than the sum of its proper divisors (611780858).

1166206906 is an equidigital number, since it uses as much as digits as its factorization.

1166206906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9559136.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 1166206906 is about 34149.7716829849. The cubic root of 1166206906 is about 1052.5882950735.

The spelling of 1166206906 in words is "one billion, one hundred sixty-six million, two hundred six thousand, nine hundred six".