1198065 has 32 divisors (see below), whose sum is σ = 2146176. Its totient is φ = 565760.

The previous prime is 1198063. The next prime is 1198069. The reversal of 1198065 is 5608911.

It is a happy number.

It is not a de Polignac number, because 1198065 - 2¹ = 1198063 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198063) 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 31 ways as a sum of consecutive naturals, for example, 8677 + ... + 8813.

It is an arithmetic number, because the mean of its divisors is an integer number (67068).

2^1198065 is an apocalyptic number.

1198065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1198065 is a deficient number, since it is larger than the sum of its proper divisors (948111).

1198065 is a wasteful number, since it uses less digits than its factorization.

1198065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 1198065 is about 1094.5615560579. The cubic root of 1198065 is about 106.2087082918.

The spelling of 1198065 in words is "one million, one hundred ninety-eight thousand, sixty-five".