6863663 has 2 divisors, whose sum is σ = 6863664. Its totient is φ = 6863662.

The previous prime is 6863653. The next prime is 6863669. The reversal of 6863663 is 3663686.

It is a happy number.

6863663 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6863663 - 2¹⁸ = 6601519 is a prime.

It is equal to p₄₆₇₉₆₆ and since 6863663 and 467966 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6863669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3431831 + 3431832.

It is an arithmetic number, because the mean of its divisors is an integer number (3431832).

Almost surely, 2^6863663 is an apocalyptic number.

6863663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6863663 is an equidigital number, since it uses as much as digits as its factorization.

6863663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 38.

The square root of 6863663 is about 2619.8593473696. The cubic root of 6863663 is about 190.0430465716.

The spelling of 6863663 in words is "six million, eight hundred sixty-three thousand, six hundred sixty-three".