996609965 has 8 divisors (see below), whose sum is σ = 1287926808. Its totient is φ = 735958080.

The previous prime is 996609961. The next prime is 996610003. The reversal of 996609965 is 569906699.

It can be written as a sum of positive squares in 4 ways, for example, as 187662601 + 808947364 = 13699^2 + 28442^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 996609965 - 2² = 996609961 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996609961) 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 in 7 ways as a sum of consecutive naturals, for example, 7666166 + ... + 7666295.

It is an arithmetic number, because the mean of its divisors is an integer number (160990851).

Almost surely, 2^996609965 is an apocalyptic number.

It is an amenable number.

996609965 is a deficient number, since it is larger than the sum of its proper divisors (291316843).

996609965 is a wasteful number, since it uses less digits than its factorization.

996609965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15332479.

The product of its (nonzero) digits is 7085880, while the sum is 59.

The square root of 996609965 is about 31569.1299373296. The cubic root of 996609965 is about 998.8687089966.

The spelling of 996609965 in words is "nine hundred ninety-six million, six hundred nine thousand, nine hundred sixty-five".