996632639 has 8 divisors (see below), whose sum is σ = 1000621440. Its totient is φ = 992652696.

The previous prime is 996632597. The next prime is 996632657. The reversal of 996632639 is 936236699.

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

It is a cyclic number.

It is not a de Polignac number, because 996632639 - 2¹² = 996628543 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 (996632239) 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, 298622 + ... + 301940.

It is an arithmetic number, because the mean of its divisors is an integer number (125077680).

Almost surely, 2^996632639 is an apocalyptic number.

996632639 is a deficient number, since it is larger than the sum of its proper divisors (3988801).

996632639 is a wasteful number, since it uses less digits than its factorization.

996632639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4429.

The product of its digits is 2834352, while the sum is 53.

The square root of 996632639 is about 31569.4890519311. The cubic root of 996632639 is about 998.8762840688.

The spelling of 996632639 in words is "nine hundred ninety-six million, six hundred thirty-two thousand, six hundred thirty-nine".