1166729 has 2 divisors, whose sum is σ = 1166730. Its totient is φ = 1166728.

The previous prime is 1166723. The next prime is 1166741. The reversal of 1166729 is 9276611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1106704 + 60025 = 1052^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166729 - 2⁴ = 1166713 is a prime.

It is a super-2 number, since 2×1166729² = 2722513118882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1166695 and 1166704.

It is not a weakly prime, because it can be changed into another prime (1166723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583364 + 583365.

It is an arithmetic number, because the mean of its divisors is an integer number (583365).

2^1166729 is an apocalyptic number.

It is an amenable number.

1166729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166729 is an equidigital number, since it uses as much as digits as its factorization.

1166729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 32.

The square root of 1166729 is about 1080.1523040757. The cubic root of 1166729 is about 105.2745347835.

The spelling of 1166729 in words is "one million, one hundred sixty-six thousand, seven hundred twenty-nine".