684648103 has 2 divisors, whose sum is σ = 684648104. Its totient is φ = 684648102.

The previous prime is 684648091. The next prime is 684648121. The reversal of 684648103 is 301846486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 684648103 - 2¹³ = 684639911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (684648163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342324051 + 342324052.

It is an arithmetic number, because the mean of its divisors is an integer number (342324052).

Almost surely, 2^684648103 is an apocalyptic number.

684648103 is a deficient number, since it is larger than the sum of its proper divisors (1).

684648103 is an equidigital number, since it uses as much as digits as its factorization.

684648103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 684648103 is about 26165.7811463751. The cubic root of 684648103 is about 881.3650058113.

It can be divided in two parts, 68464 and 8103, that added together give a palindrome (76567).

The spelling of 684648103 in words is "six hundred eighty-four million, six hundred forty-eight thousand, one hundred three".