648910103 has 2 divisors, whose sum is σ = 648910104. Its totient is φ = 648910102.

The previous prime is 648910099. The next prime is 648910117. The reversal of 648910103 is 301019846.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 648910103 - 2² = 648910099 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648910103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648910903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324455051 + 324455052.

It is an arithmetic number, because the mean of its divisors is an integer number (324455052).

Almost surely, 2^648910103 is an apocalyptic number.

648910103 is a deficient number, since it is larger than the sum of its proper divisors (1).

648910103 is an equidigital number, since it uses as much as digits as its factorization.

648910103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 648910103 is about 25473.7139616507. The cubic root of 648910103 is about 865.7546747878.

Adding to 648910103 its reverse (301019846), we get a palindrome (949929949).

The spelling of 648910103 in words is "six hundred forty-eight million, nine hundred ten thousand, one hundred three".