1166598 has 12 divisors (see below), whose sum is σ = 2527668. Its totient is φ = 388860.

The previous prime is 1166597. The next prime is 1166603. The reversal of 1166598 is 8956611.

1166598 is a `hidden beast` number, since 1 + 1 + 66 + 598 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166597) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32388 + ... + 32423.

It is an arithmetic number, because the mean of its divisors is an integer number (210639).

2^1166598 is an apocalyptic number.

1166598 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1166598 is an abundant number, since it is smaller than the sum of its proper divisors (1361070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166598 is a wasteful number, since it uses less digits than its factorization.

1166598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64819 (or 64816 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1166598 is about 1080.0916627768. The cubic root of 1166598 is about 105.2705945711.

It can be divided in two parts, 1166 and 598, that added together give a square (1764 = 42²).

The spelling of 1166598 in words is "one million, one hundred sixty-six thousand, five hundred ninety-eight".