996658237 has 2 divisors, whose sum is σ = 996658238. Its totient is φ = 996658236.

The previous prime is 996658213. The next prime is 996658253. The reversal of 996658237 is 732856699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 644195161 + 352463076 = 25381^2 + 18774^2 .

It is an emirp because it is prime and its reverse (732856699) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-996658237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (996658207) 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, 498329118 + 498329119.

It is an arithmetic number, because the mean of its divisors is an integer number (498329119).

Almost surely, 2^996658237 is an apocalyptic number.

It is an amenable number.

996658237 is a deficient number, since it is larger than the sum of its proper divisors (1).

996658237 is an equidigital number, since it uses as much as digits as its factorization.

996658237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 55.

The square root of 996658237 is about 31569.8944724242. The cubic root of 996658237 is about 998.8848358712.

The spelling of 996658237 in words is "nine hundred ninety-six million, six hundred fifty-eight thousand, two hundred thirty-seven".