6619398 has 16 divisors (see below), whose sum is σ = 13368576. Its totient is φ = 2184840.

The previous prime is 6619381. The next prime is 6619441. The reversal of 6619398 is 8939166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4738 + ... + 5973.

It is an arithmetic number, because the mean of its divisors is an integer number (835536).

Almost surely, 2^6619398 is an apocalyptic number.

6619398 is an abundant number, since it is smaller than the sum of its proper divisors (6749178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6619398 is a wasteful number, since it uses less digits than its factorization.

6619398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10819.

The product of its digits is 69984, while the sum is 42.

The square root of 6619398 is about 2572.8190764218. The cubic root of 6619398 is about 187.7613351407.

It can be divided in two parts, 6619 and 398, that multiplied together give a palindrome (2634362).

The spelling of 6619398 in words is "six million, six hundred nineteen thousand, three hundred ninety-eight".