3198643 has 4 divisors (see below), whose sum is σ = 3655600. Its totient is φ = 2741688.

The previous prime is 3198619. The next prime is 3198649. The reversal of 3198643 is 3468913.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3468913 = 7 ⋅495559.

It is a cyclic number.

It is not a de Polignac number, because 3198643 - 2⁹ = 3198131 is a prime.

It is a Duffinian number.

3198643 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3198599 and 3198608.

It is not an unprimeable number, because it can be changed into a prime (3198649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228468 + ... + 228481.

It is an arithmetic number, because the mean of its divisors is an integer number (913900).

Almost surely, 2^3198643 is an apocalyptic number.

3198643 is a deficient number, since it is larger than the sum of its proper divisors (456957).

3198643 is an equidigital number, since it uses as much as digits as its factorization.

3198643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456956.

The product of its digits is 15552, while the sum is 34.

The square root of 3198643 is about 1788.4750487496. The cubic root of 3198643 is about 147.3404268724.

The spelling of 3198643 in words is "three million, one hundred ninety-eight thousand, six hundred forty-three".