830776987 has 2 divisors, whose sum is σ = 830776988. Its totient is φ = 830776986.

The previous prime is 830776981. The next prime is 830777009. The reversal of 830776987 is 789677038.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 830776987 - 2¹¹ = 830774939 is a prime.

It is not a weakly prime, because it can be changed into another prime (830776981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415388493 + 415388494.

It is an arithmetic number, because the mean of its divisors is an integer number (415388494).

Almost surely, 2^830776987 is an apocalyptic number.

830776987 is a deficient number, since it is larger than the sum of its proper divisors (1).

830776987 is an equidigital number, since it uses as much as digits as its factorization.

830776987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The square root of 830776987 is about 28823.2022336173. The cubic root of 830776987 is about 940.0727976668.

The spelling of 830776987 in words is "eight hundred thirty million, seven hundred seventy-six thousand, nine hundred eighty-seven".