78859863 has 12 divisors (see below), whose sum is σ = 114084360. Its totient is φ = 52492176.

The previous prime is 78859853. The next prime is 78859867. The reversal of 78859863 is 36895887.

It is a happy number.

It is not a de Polignac number, because 78859863 - 2⁶ = 78859799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78859867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268 + ... + 12561.

It is an arithmetic number, because the mean of its divisors is an integer number (9507030).

Almost surely, 2^78859863 is an apocalyptic number.

78859863 is a deficient number, since it is larger than the sum of its proper divisors (35224497).

78859863 is a wasteful number, since it uses less digits than its factorization.

78859863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13518 (or 13515 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 78859863 is about 8880.3075960239. The cubic root of 78859863 is about 428.8301771309.

The spelling of 78859863 in words is "seventy-eight million, eight hundred fifty-nine thousand, eight hundred sixty-three".