684244103 has 4 divisors (see below), whose sum is σ = 684469128. Its totient is φ = 684019080.

The previous prime is 684244073. The next prime is 684244117. The reversal of 684244103 is 301442486.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-684244103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 684244103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684244903) 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, 107888 + ... + 114053.

It is an arithmetic number, because the mean of its divisors is an integer number (171117282).

Almost surely, 2^684244103 is an apocalyptic number.

684244103 is a deficient number, since it is larger than the sum of its proper divisors (225025).

684244103 is a wasteful number, since it uses less digits than its factorization.

684244103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225024.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 684244103 is about 26158.0600006958. The cubic root of 684244103 is about 881.1916118584.

Adding to 684244103 its reverse (301442486), we get a palindrome (985686589).

It can be divided in two parts, 68424 and 4103, that added together give a palindrome (72527).

The spelling of 684244103 in words is "six hundred eighty-four million, two hundred forty-four thousand, one hundred three".