820034783 has 2 divisors, whose sum is σ = 820034784. Its totient is φ = 820034782.

The previous prime is 820034779. The next prime is 820034807. The reversal of 820034783 is 387430028.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 820034783 - 2² = 820034779 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820034753) 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, 410017391 + 410017392.

It is an arithmetic number, because the mean of its divisors is an integer number (410017392).

Almost surely, 2^820034783 is an apocalyptic number.

820034783 is a deficient number, since it is larger than the sum of its proper divisors (1).

820034783 is an equidigital number, since it uses as much as digits as its factorization.

820034783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 820034783 is about 28636.2494576367. The cubic root of 820034783 is about 936.0033964952.

The spelling of 820034783 in words is "eight hundred twenty million, thirty-four thousand, seven hundred eighty-three".