820560463 has 2 divisors, whose sum is σ = 820560464. Its totient is φ = 820560462.

The previous prime is 820560413. The next prime is 820560479. The reversal of 820560463 is 364065028.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-820560463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820560413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410280231 + 410280232.

It is an arithmetic number, because the mean of its divisors is an integer number (410280232).

Almost surely, 2^820560463 is an apocalyptic number.

820560463 is a deficient number, since it is larger than the sum of its proper divisors (1).

820560463 is an equidigital number, since it uses as much as digits as its factorization.

820560463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 820560463 is about 28645.4265634150. The cubic root of 820560463 is about 936.2033608436.

The spelling of 820560463 in words is "eight hundred twenty million, five hundred sixty thousand, four hundred sixty-three".