78681085 has 16 divisors (see below), whose sum is σ = 108201600. Its totient is φ = 53804736.

The previous prime is 78681067. The next prime is 78681107. The reversal of 78681085 is 58018687.

It is a cyclic number.

It is not a de Polignac number, because 78681085 - 2²³ = 70292477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10726 + ... + 16504.

It is an arithmetic number, because the mean of its divisors is an integer number (6762600).

Almost surely, 2^78681085 is an apocalyptic number.

It is an amenable number.

78681085 is a deficient number, since it is larger than the sum of its proper divisors (29520515).

78681085 is a wasteful number, since it uses less digits than its factorization.

78681085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6180.

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 78681085 is about 8870.2359044165. The cubic root of 78681085 is about 428.5058743913.

The spelling of 78681085 in words is "seventy-eight million, six hundred eighty-one thousand, eighty-five".