78027985 has 8 divisors (see below), whose sum is σ = 107009856. Its totient is φ = 53504880.

The previous prime is 78027979. The next prime is 78027997. The reversal of 78027985 is 58972087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-78027985 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114651 + ... + 1114720.

It is an arithmetic number, because the mean of its divisors is an integer number (13376232).

Almost surely, 2^78027985 is an apocalyptic number.

It is an amenable number.

78027985 is a deficient number, since it is larger than the sum of its proper divisors (28981871).

78027985 is a wasteful number, since it uses less digits than its factorization.

78027985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229383.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 78027985 is about 8833.3450628853. The cubic root of 78027985 is about 427.3169605015.

The spelling of 78027985 in words is "seventy-eight million, twenty-seven thousand, nine hundred eighty-five".