78508343 has 2 divisors, whose sum is σ = 78508344. Its totient is φ = 78508342.

The previous prime is 78508327. The next prime is 78508387. The reversal of 78508343 is 34380587.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78508343 - 2⁴ = 78508327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78508297 and 78508306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78508543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39254171 + 39254172.

It is an arithmetic number, because the mean of its divisors is an integer number (39254172).

Almost surely, 2^78508343 is an apocalyptic number.

78508343 is a deficient number, since it is larger than the sum of its proper divisors (1).

78508343 is an equidigital number, since it uses as much as digits as its factorization.

78508343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 78508343 is about 8860.4933835538. The cubic root of 78508343 is about 428.1920539511.

The spelling of 78508343 in words is "seventy-eight million, five hundred eight thousand, three hundred forty-three".