8078985 has 12 divisors (see below), whose sum is σ = 14003652. Its totient is φ = 4308768.

The previous prime is 8078981. The next prime is 8078989. The reversal of 8078985 is 5898708.

It is an interprime number because it is at equal distance from previous prime (8078981) and next prime (8078989).

It can be written as a sum of positive squares in 2 ways, for example, as 1468944 + 6610041 = 1212^2 + 2571^2 .

It is not a de Polignac number, because 8078985 - 2² = 8078981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 179533 = 8078985 / (8 + 0 + 7 + 8 + 9 + 8 + 5).

It is a Curzon number.

8078985 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8078985.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8078981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89722 + ... + 89811.

It is an arithmetic number, because the mean of its divisors is an integer number (1166971).

Almost surely, 2^8078985 is an apocalyptic number.

It is an amenable number.

8078985 is a deficient number, since it is larger than the sum of its proper divisors (5924667).

8078985 is a wasteful number, since it uses less digits than its factorization.

8078985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179544 (or 179541 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 8078985 is about 2842.3555372261. The cubic root of 8078985 is about 200.6560539463.

The spelling of 8078985 in words is "eight million, seventy-eight thousand, nine hundred eighty-five".