820483687 has 2 divisors, whose sum is σ = 820483688. Its totient is φ = 820483686.

The previous prime is 820483667. The next prime is 820483691. The reversal of 820483687 is 786384028.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-820483687 is a prime.

It is a super-2 number, since 2×820483687² = 1346386961266227938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820483607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410241843 + 410241844.

It is an arithmetic number, because the mean of its divisors is an integer number (410241844).

Almost surely, 2^820483687 is an apocalyptic number.

820483687 is a deficient number, since it is larger than the sum of its proper divisors (1).

820483687 is an equidigital number, since it uses as much as digits as its factorization.

820483687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 820483687 is about 28644.0864228552. The cubic root of 820483687 is about 936.1741612114.

The spelling of 820483687 in words is "eight hundred twenty million, four hundred eighty-three thousand, six hundred eighty-seven".