862820263 has 2 divisors, whose sum is σ = 862820264. Its totient is φ = 862820262.

The previous prime is 862820251. The next prime is 862820297. The reversal of 862820263 is 362028268.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-862820263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863820263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431410131 + 431410132.

It is an arithmetic number, because the mean of its divisors is an integer number (431410132).

Almost surely, 2^862820263 is an apocalyptic number.

862820263 is a deficient number, since it is larger than the sum of its proper divisors (1).

862820263 is an equidigital number, since it uses as much as digits as its factorization.

862820263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 862820263 is about 29373.8023245204. The cubic root of 862820263 is about 952.0069347087.

The spelling of 862820263 in words is "eight hundred sixty-two million, eight hundred twenty thousand, two hundred sixty-three".