1198778 has 8 divisors (see below), whose sum is σ = 2055072. Its totient is φ = 513756.

The previous prime is 1198751. The next prime is 1198793. The reversal of 1198778 is 8778911.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42800 + ... + 42827.

It is an arithmetic number, because the mean of its divisors is an integer number (256884).

2^1198778 is an apocalyptic number.

1198778 is a deficient number, since it is larger than the sum of its proper divisors (856294).

1198778 is an equidigital number, since it uses as much as digits as its factorization.

1198778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85636.

The product of its digits is 28224, while the sum is 41.

The square root of 1198778 is about 1094.8872088028. The cubic root of 1198778 is about 106.2297733123.

It can be divided in two parts, 11 and 98778, that added together give a palindrome (98789).

The spelling of 1198778 in words is "one million, one hundred ninety-eight thousand, seven hundred seventy-eight".