820801363 has 2 divisors, whose sum is σ = 820801364. Its totient is φ = 820801362.

The previous prime is 820801351. The next prime is 820801367. The reversal of 820801363 is 363108028.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-820801363 is a prime.

It is not a weakly prime, because it can be changed into another prime (820801367) 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, 410400681 + 410400682.

It is an arithmetic number, because the mean of its divisors is an integer number (410400682).

Almost surely, 2^820801363 is an apocalyptic number.

820801363 is a deficient number, since it is larger than the sum of its proper divisors (1).

820801363 is an equidigital number, since it uses as much as digits as its factorization.

820801363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 820801363 is about 28649.6311145536. The cubic root of 820801363 is about 936.2949686868.

The spelling of 820801363 in words is "eight hundred twenty million, eight hundred one thousand, three hundred sixty-three".