1166001 has 8 divisors (see below), whose sum is σ = 1578144. Its totient is φ = 765600.

The previous prime is 1165993. The next prime is 1166021. The reversal of 1166001 is 1006611.

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

It is not a de Polignac number, because 1166001 - 2³ = 1165993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1166021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2700 + ... + 3101.

It is an arithmetic number, because the mean of its divisors is an integer number (197268).

2^1166001 is an apocalyptic number.

It is an amenable number.

1166001 is a deficient number, since it is larger than the sum of its proper divisors (412143).

1166001 is an equidigital number, since it uses as much as digits as its factorization.

1166001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5871.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1166001 is about 1079.8152619777. The cubic root of 1166001 is about 105.2526342944.

The spelling of 1166001 in words is "one million, one hundred sixty-six thousand, one".