996346640 has 20 divisors (see below), whose sum is σ = 2316506124. Its totient is φ = 398538624.

The previous prime is 996346639. The next prime is 996346669. The reversal of 996346640 is 46643699.

It can be written as a sum of positive squares in 2 ways, for example, as 336062224 + 660284416 = 18332^2 + 25696^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6227087 + ... + 6227246.

Almost surely, 2^996346640 is an apocalyptic number.

It is an amenable number.

996346640 is an abundant number, since it is smaller than the sum of its proper divisors (1320159484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

996346640 is a wasteful number, since it uses less digits than its factorization.

996346640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12454346 (or 12454340 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 47.

The square root of 996346640 is about 31564.9590527217. The cubic root of 996346640 is about 998.7807273116.

The spelling of 996346640 in words is "nine hundred ninety-six million, three hundred forty-six thousand, six hundred forty".