996605903 has 2 divisors, whose sum is σ = 996605904. Its totient is φ = 996605902.

The previous prime is 996605843. The next prime is 996605923. The reversal of 996605903 is 309506699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 996605903 - 2¹² = 996601807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (996605923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498302951 + 498302952.

It is an arithmetic number, because the mean of its divisors is an integer number (498302952).

Almost surely, 2^996605903 is an apocalyptic number.

996605903 is a deficient number, since it is larger than the sum of its proper divisors (1).

996605903 is an equidigital number, since it uses as much as digits as its factorization.

996605903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 393660, while the sum is 47.

The square root of 996605903 is about 31569.0656022632. The cubic root of 996605903 is about 998.8673519260.

The spelling of 996605903 in words is "nine hundred ninety-six million, six hundred five thousand, nine hundred three".