3198655 has 4 divisors (see below), whose sum is σ = 3838392. Its totient is φ = 2558920.

The previous prime is 3198653. The next prime is 3198659. The reversal of 3198655 is 5568913.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3198655 - 2¹ = 3198653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3198653) 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, 319861 + ... + 319870.

It is an arithmetic number, because the mean of its divisors is an integer number (959598).

Almost surely, 2^3198655 is an apocalyptic number.

3198655 is a deficient number, since it is larger than the sum of its proper divisors (639737).

3198655 is an equidigital number, since it uses as much as digits as its factorization.

3198655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639736.

The product of its digits is 32400, while the sum is 37.

The square root of 3198655 is about 1788.4784035599. The cubic root of 3198655 is about 147.3406111258.

It can be divided in two parts, 31986 and 55, that added together give a square (32041 = 179²).

The spelling of 3198655 in words is "three million, one hundred ninety-eight thousand, six hundred fifty-five".