78688343 has 4 divisors (see below), whose sum is σ = 78737160. Its totient is φ = 78639528.

The previous prime is 78688333. The next prime is 78688361. The reversal of 78688343 is 34388687.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34388687 = 613 ⋅56099.

It is a cyclic number.

It is not a de Polignac number, because 78688343 - 2⁴ = 78688327 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 (78688333) 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, 21905 + ... + 25242.

It is an arithmetic number, because the mean of its divisors is an integer number (19684290).

Almost surely, 2^78688343 is an apocalyptic number.

78688343 is a deficient number, since it is larger than the sum of its proper divisors (48817).

78688343 is a wasteful number, since it uses less digits than its factorization.

78688343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48816.

The product of its digits is 774144, while the sum is 47.

The square root of 78688343 is about 8870.6450160064. The cubic root of 78688343 is about 428.5190499426.

The spelling of 78688343 in words is "seventy-eight million, six hundred eighty-eight thousand, three hundred forty-three".