78808 has 8 divisors (see below), whose sum is σ = 147780. Its totient is φ = 39400.

The previous prime is 78803. The next prime is 78809. The reversal of 78808 is 80887.

It is a tau number, because it is divible by the number of its divisors (8).

It is a zygodrome in base 3 and base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 78808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4918 + ... + 4933.

2⁷⁸⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

78808 is a deficient number, since it is larger than the sum of its proper divisors (68972).

78808 is a wasteful number, since it uses less digits than its factorization.

78808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9857 (or 9853 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 78808 is about 280.7276260007. The cubic root of 78808 is about 42.8736148323.

The spelling of 78808 in words is "seventy-eight thousand, eight hundred eight".