1166801 has 2 divisors, whose sum is σ = 1166802. Its totient is φ = 1166800.

The previous prime is 1166779. The next prime is 1166807. The reversal of 1166801 is 1086611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1157776 + 9025 = 1076^2 + 95^2 .

It is an emirp because it is prime and its reverse (1086611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1166801 - 2¹⁰ = 1165777 is a prime.

It is a super-2 number, since 2×1166801² = 2722849147202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1166807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583400 + 583401.

It is an arithmetic number, because the mean of its divisors is an integer number (583401).

2^1166801 is an apocalyptic number.

It is an amenable number.

1166801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166801 is an equidigital number, since it uses as much as digits as its factorization.

1166801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1166801 is about 1080.1856321948. The cubic root of 1166801 is about 105.2767002708.

The spelling of 1166801 in words is "one million, one hundred sixty-six thousand, eight hundred one".