996608644 has 12 divisors (see below), whose sum is σ = 1746362268. Its totient is φ = 497648000.

The previous prime is 996608617. The next prime is 996608659. The reversal of 996608644 is 446806699.

It can be written as a sum of positive squares in 2 ways, for example, as 86862400 + 909746244 = 9320^2 + 30162^2 .

It is a junction number, because it is equal to n+sod(n) for n = 996608591 and 996608600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160657 + ... + 166744.

It is an arithmetic number, because the mean of its divisors is an integer number (145530189).

Almost surely, 2^996608644 is an apocalyptic number.

It is an amenable number.

996608644 is a deficient number, since it is larger than the sum of its proper divisors (749753624).

996608644 is a wasteful number, since it uses less digits than its factorization.

996608644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328166 (or 328164 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 52.

The square root of 996608644 is about 31569.1090149849. The cubic root of 996608644 is about 998.8682676651.

The spelling of 996608644 in words is "nine hundred ninety-six million, six hundred eight thousand, six hundred forty-four".