996678791 has 2 divisors, whose sum is σ = 996678792. Its totient is φ = 996678790.

The previous prime is 996678743. The next prime is 996678829. The reversal of 996678791 is 197876699.

It is a happy number.

996678791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 996678791 - 2¹⁸ = 996416647 is a prime.

It is a super-2 number, since 2×996678791² = 1986737224858443362, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (996678391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498339395 + 498339396.

It is an arithmetic number, because the mean of its divisors is an integer number (498339396).

Almost surely, 2^996678791 is an apocalyptic number.

996678791 is a deficient number, since it is larger than the sum of its proper divisors (1).

996678791 is an equidigital number, since it uses as much as digits as its factorization.

996678791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10287648, while the sum is 62.

The square root of 996678791 is about 31570.2200024010. The cubic root of 996678791 is about 998.8917024637.

The spelling of 996678791 in words is "nine hundred ninety-six million, six hundred seventy-eight thousand, seven hundred ninety-one".