78984085 has 8 divisors (see below), whose sum is σ = 97342776. Its totient is φ = 61479360.

The previous prime is 78984079. The next prime is 78984097. The reversal of 78984085 is 58048987.

It can be written as a sum of positive squares in 4 ways, for example, as 33097009 + 45887076 = 5753^2 + 6774^2 .

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

It is not a de Polignac number, because 78984085 - 2⁹ = 78983573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213286 + ... + 213655.

It is an arithmetic number, because the mean of its divisors is an integer number (12167847).

Almost surely, 2^78984085 is an apocalyptic number.

It is an amenable number.

78984085 is a deficient number, since it is larger than the sum of its proper divisors (18358691).

78984085 is a wasteful number, since it uses less digits than its factorization.

78984085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426983.

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 78984085 is about 8887.2990835236. The cubic root of 78984085 is about 429.0552269593.

The spelling of 78984085 in words is "seventy-eight million, nine hundred eighty-four thousand, eighty-five".