1066398 has 16 divisors (see below), whose sum is σ = 2157840. Its totient is φ = 351296.

The previous prime is 1066379. The next prime is 1066399. The reversal of 1066398 is 8936601.

It is a super-2 number, since 2×1066398² = 2274409388808, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465 + ... + 1532.

It is an arithmetic number, because the mean of its divisors is an integer number (134865).

2^1066398 is an apocalyptic number.

1066398 is an abundant number, since it is smaller than the sum of its proper divisors (1091442).

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

1066398 is a wasteful number, since it uses less digits than its factorization.

1066398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1066398 is about 1032.6654831067. The cubic root of 1066398 is about 102.1660118571.

The spelling of 1066398 in words is "one million, sixty-six thousand, three hundred ninety-eight".