1198005 has 8 divisors (see below), whose sum is σ = 1916832. Its totient is φ = 638928.

The previous prime is 1197997. The next prime is 1198013. The reversal of 1198005 is 5008911.

It is an interprime number because it is at equal distance from previous prime (1197997) and next prime (1198013).

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

It is not a de Polignac number, because 1198005 - 2³ = 1197997 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 39919 + ... + 39948.

It is an arithmetic number, because the mean of its divisors is an integer number (239604).

2^1198005 is an apocalyptic number.

1198005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1198005 is a deficient number, since it is larger than the sum of its proper divisors (718827).

1198005 is an equidigital number, since it uses as much as digits as its factorization.

1198005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79875.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1198005 is about 1094.5341474801. The cubic root of 1198005 is about 106.2069352581.

It can be divided in two parts, 119800 and 5, that added together give a triangular number (119805 = T₄₈₉).

The spelling of 1198005 in words is "one million, one hundred ninety-eight thousand, five".