1198745 has 8 divisors (see below), whose sum is σ = 1446984. Its totient is φ = 953344.

The previous prime is 1198727. The next prime is 1198751. The reversal of 1198745 is 5478911.

It can be written as a sum of positive squares in 4 ways, for example, as 337561 + 861184 = 581^2 + 928^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1198745 - 2²⁰ = 150169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377 + ... + 1593.

It is an arithmetic number, because the mean of its divisors is an integer number (180873).

2^1198745 is an apocalyptic number.

It is an amenable number.

1198745 is a deficient number, since it is larger than the sum of its proper divisors (248239).

1198745 is a wasteful number, since it uses less digits than its factorization.

1198745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419.

The product of its digits is 10080, while the sum is 35.

The square root of 1198745 is about 1094.8721386536. The cubic root of 1198745 is about 106.2287985378.

The spelling of 1198745 in words is "one million, one hundred ninety-eight thousand, seven hundred forty-five".