78614863 has 4 divisors (see below), whose sum is σ = 78635968. Its totient is φ = 78593760.

The previous prime is 78614849. The next prime is 78614903. The reversal of 78614863 is 36841687.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78614863 - 2⁹ = 78614351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78614813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3306 + ... + 12967.

It is an arithmetic number, because the mean of its divisors is an integer number (19658992).

Almost surely, 2^78614863 is an apocalyptic number.

78614863 is a deficient number, since it is larger than the sum of its proper divisors (21105).

78614863 is a wasteful number, since it uses less digits than its factorization.

78614863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21104.

The product of its digits is 193536, while the sum is 43.

The square root of 78614863 is about 8866.5022979752. The cubic root of 78614863 is about 428.3856232078.

The spelling of 78614863 in words is "seventy-eight million, six hundred fourteen thousand, eight hundred sixty-three".