996216161 has 2 divisors, whose sum is σ = 996216162. Its totient is φ = 996216160.

The previous prime is 996216127. The next prime is 996216173. The reversal of 996216161 is 161612699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 606390625 + 389825536 = 24625^2 + 19744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-996216161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (996216101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498108080 + 498108081.

It is an arithmetic number, because the mean of its divisors is an integer number (498108081).

Almost surely, 2^996216161 is an apocalyptic number.

It is an amenable number.

996216161 is a deficient number, since it is larger than the sum of its proper divisors (1).

996216161 is an equidigital number, since it uses as much as digits as its factorization.

996216161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 41.

The square root of 996216161 is about 31562.8921520193. The cubic root of 996216161 is about 998.7371261543.

The spelling of 996216161 in words is "nine hundred ninety-six million, two hundred sixteen thousand, one hundred sixty-one".