996820677 has 12 divisors (see below), whose sum is σ = 1441892140. Its totient is φ = 663605568.

The previous prime is 996820673. The next prime is 996820681. The reversal of 996820677 is 776028699.

It is an interprime number because it is at equal distance from previous prime (996820673) and next prime (996820681).

It can be written as a sum of positive squares in 2 ways, for example, as 147039876 + 849780801 = 12126^2 + 29151^2 .

It is not a de Polignac number, because 996820677 - 2² = 996820673 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 (996820673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71728 + ... + 84489.

Almost surely, 2^996820677 is an apocalyptic number.

It is an amenable number.

996820677 is a deficient number, since it is larger than the sum of its proper divisors (445071463).

996820677 is a wasteful number, since it uses less digits than its factorization.

996820677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156932 (or 156929 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 996820677 is about 31572.4670718017. The cubic root of 996820677 is about 998.9391005571.

The spelling of 996820677 in words is "nine hundred ninety-six million, eight hundred twenty thousand, six hundred seventy-seven".