78086105 has 12 divisors (see below), whose sum is σ = 98896932. Its totient is φ = 59179680.

The previous prime is 78086093. The next prime is 78086111. The reversal of 78086105 is 50168087.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 35366809 + 42719296 = 5947^2 + 6536^2 .

It is not a de Polignac number, because 78086105 - 2⁴ = 78086089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19826 + ... + 23435.

It is an arithmetic number, because the mean of its divisors is an integer number (8241411).

Almost surely, 2^78086105 is an apocalyptic number.

It is an amenable number.

78086105 is a deficient number, since it is larger than the sum of its proper divisors (20810827).

78086105 is a wasteful number, since it uses less digits than its factorization.

78086105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43304 (or 43285 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 78086105 is about 8836.6342574535. The cubic root of 78086105 is about 427.4230314106.

The spelling of 78086105 in words is "seventy-eight million, eighty-six thousand, one hundred five".