78706 has 16 divisors (see below), whose sum is σ = 129600. Its totient is φ = 35728.

The previous prime is 78697. The next prime is 78707. The reversal of 78706 is 60787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78707) by changing a digit.

78706 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1305 + ... + 1363.

It is an arithmetic number, because the mean of its divisors is an integer number (8100).

2⁷⁸⁷⁰⁶ is an apocalyptic number.

78706 is a deficient number, since it is larger than the sum of its proper divisors (50894).

78706 is a wasteful number, since it uses less digits than its factorization.

78706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 78706 is about 280.5458964234. The cubic root of 78706 is about 42.8551099565.

It can be divided in two parts, 78 and 706, that added together give a square (784 = 28²).

The spelling of 78706 in words is "seventy-eight thousand, seven hundred six".