78324863 has 2 divisors, whose sum is σ = 78324864. Its totient is φ = 78324862.

The previous prime is 78324847. The next prime is 78324871. The reversal of 78324863 is 36842387.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78324863 - 2⁴ = 78324847 is a prime.

It is a super-2 number, since 2×78324863² = 12269568327937538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78324863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78324823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39162431 + 39162432.

It is an arithmetic number, because the mean of its divisors is an integer number (39162432).

Almost surely, 2^78324863 is an apocalyptic number.

78324863 is a deficient number, since it is larger than the sum of its proper divisors (1).

78324863 is an equidigital number, since it uses as much as digits as its factorization.

78324863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 41.

The square root of 78324863 is about 8850.1335018179. The cubic root of 78324863 is about 427.8582212291.

The spelling of 78324863 in words is "seventy-eight million, three hundred twenty-four thousand, eight hundred sixty-three".