1166547 has 8 divisors (see below), whose sum is σ = 1591744. Its totient is φ = 759528.

The previous prime is 1166533. The next prime is 1166549. The reversal of 1166547 is 7456611.

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

It is not a de Polignac number, because 1166547 - 2⁴ = 1166531 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166549) 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 in 7 ways as a sum of consecutive naturals, for example, 4393 + ... + 4650.

It is an arithmetic number, because the mean of its divisors is an integer number (198968).

2^1166547 is an apocalyptic number.

1166547 is a deficient number, since it is larger than the sum of its proper divisors (425197).

1166547 is an equidigital number, since it uses as much as digits as its factorization.

1166547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9089.

The product of its digits is 5040, while the sum is 30.

The square root of 1166547 is about 1080.0680534115. The cubic root of 1166547 is about 105.2690605155.

Subtracting 1166547 from its reverse (7456611), we obtain a square (6290064 = 2508²).

The spelling of 1166547 in words is "one million, one hundred sixty-six thousand, five hundred forty-seven".