996985187 has 6 divisors (see below), whose sum is σ = 1095859884. Its totient is φ = 906350060.

The previous prime is 996985183. The next prime is 996985189. The reversal of 996985187 is 781589699.

It is not a de Polignac number, because 996985187 - 2² = 996985183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (996985183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4119653 + ... + 4119894.

It is an arithmetic number, because the mean of its divisors is an integer number (182643314).

Almost surely, 2^996985187 is an apocalyptic number.

996985187 is a deficient number, since it is larger than the sum of its proper divisors (98874697).

996985187 is a wasteful number, since it uses less digits than its factorization.

996985187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8239569 (or 8239558 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 62.

The square root of 996985187 is about 31575.0722406141. The cubic root of 996985187 is about 998.9940507387.

The spelling of 996985187 in words is "nine hundred ninety-six million, nine hundred eighty-five thousand, one hundred eighty-seven".