993680503 has 2 divisors, whose sum is σ = 993680504. Its totient is φ = 993680502.

The previous prime is 993680381. The next prime is 993680509. The reversal of 993680503 is 305086399.

It is a strong prime.

It is an emirp because it is prime and its reverse (305086399) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-993680503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 993680503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993680509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496840251 + 496840252.

It is an arithmetic number, because the mean of its divisors is an integer number (496840252).

Almost surely, 2^993680503 is an apocalyptic number.

993680503 is a deficient number, since it is larger than the sum of its proper divisors (1).

993680503 is an equidigital number, since it uses as much as digits as its factorization.

993680503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 993680503 is about 31522.6982189025. The cubic root of 993680503 is about 997.8890480173.

The spelling of 993680503 in words is "nine hundred ninety-three million, six hundred eighty thousand, five hundred three".