1166398 has 8 divisors (see below), whose sum is σ = 1757808. Its totient is φ = 580464.

The previous prime is 1166393. The next prime is 1166401. The reversal of 1166398 is 8936611.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166393) 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 3 ways as a sum of consecutive naturals, for example, 786 + ... + 1717.

It is an arithmetic number, because the mean of its divisors is an integer number (219726).

2^1166398 is an apocalyptic number.

1166398 is a deficient number, since it is larger than the sum of its proper divisors (591410).

1166398 is a wasteful number, since it uses less digits than its factorization.

1166398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738.

The product of its digits is 7776, while the sum is 34.

The square root of 1166398 is about 1079.9990740737. Note that the first 3 decimals coincide. The cubic root of 1166398 is about 105.2645784107.

The spelling of 1166398 in words is "one million, one hundred sixty-six thousand, three hundred ninety-eight".