996963857 has 8 divisors (see below), whose sum is σ = 1006485480. Its totient is φ = 987454720.

The previous prime is 996963823. The next prime is 996963889. The reversal of 996963857 is 758369699.

It can be written as a sum of positive squares in 4 ways, for example, as 212459776 + 784504081 = 14576^2 + 28009^2 .

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 996963857 - 2⁸ = 996963601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 996963857.

It is not an unprimeable number, because it can be changed into a prime (996963757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259007 + ... + 262827.

It is an arithmetic number, because the mean of its divisors is an integer number (125810685).

Almost surely, 2^996963857 is an apocalyptic number.

It is an amenable number.

996963857 is a deficient number, since it is larger than the sum of its proper divisors (9521623).

996963857 is a wasteful number, since it uses less digits than its factorization.

With its successor (996963858) it forms an eRAP, since the sums of their prime factors are consecutive (6243 and 6244).

996963857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6243.

The product of its digits is 22044960, while the sum is 62.

The square root of 996963857 is about 31574.7344723594. The cubic root of 996963857 is about 998.9869263617.

The spelling of 996963857 in words is "nine hundred ninety-six million, nine hundred sixty-three thousand, eight hundred fifty-seven".