996634813 has 2 divisors, whose sum is σ = 996634814. Its totient is φ = 996634812.

The previous prime is 996634787. The next prime is 996634831. The reversal of 996634813 is 318436699.

Together with next prime (996634831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 845762724 + 150872089 = 29082^2 + 12283^2 .

It is a cyclic number.

It is not a de Polignac number, because 996634813 - 2¹³ = 996626621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (996634883) 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, 498317406 + 498317407.

It is an arithmetic number, because the mean of its divisors is an integer number (498317407).

Almost surely, 2^996634813 is an apocalyptic number.

It is an amenable number.

996634813 is a deficient number, since it is larger than the sum of its proper divisors (1).

996634813 is an equidigital number, since it uses as much as digits as its factorization.

996634813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 996634813 is about 31569.5234838919. The cubic root of 996634813 is about 998.8770103664.

The spelling of 996634813 in words is "nine hundred ninety-six million, six hundred thirty-four thousand, eight hundred thirteen".