3198778 has 8 divisors (see below), whose sum is σ = 5234400. Its totient is φ = 1453980.

The previous prime is 3198751. The next prime is 3198799. The reversal of 3198778 is 8778913.

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, 72678 + ... + 72721.

It is an arithmetic number, because the mean of its divisors is an integer number (654300).

Almost surely, 2^3198778 is an apocalyptic number.

3198778 is a deficient number, since it is larger than the sum of its proper divisors (2035622).

3198778 is a wasteful number, since it uses less digits than its factorization.

3198778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145412.

The product of its digits is 84672, while the sum is 43.

The square root of 3198778 is about 1788.5127900018. The cubic root of 3198778 is about 147.3424996970.

The spelling of 3198778 in words is "three million, one hundred ninety-eight thousand, seven hundred seventy-eight".