861763223 has 2 divisors, whose sum is σ = 861763224. Its totient is φ = 861763222.

The previous prime is 861763211. The next prime is 861763247. The reversal of 861763223 is 322367168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 861763223 - 2¹⁶ = 861697687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861763523) 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, 430881611 + 430881612.

It is an arithmetic number, because the mean of its divisors is an integer number (430881612).

Almost surely, 2^861763223 is an apocalyptic number.

861763223 is a deficient number, since it is larger than the sum of its proper divisors (1).

861763223 is an equidigital number, since it uses as much as digits as its factorization.

861763223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 861763223 is about 29355.8039065531. The cubic root of 861763223 is about 951.6180083486.

The spelling of 861763223 in words is "eight hundred sixty-one million, seven hundred sixty-three thousand, two hundred twenty-three".