78501085 has 16 divisors (see below), whose sum is σ = 102404736. Its totient is φ = 57423168.

The previous prime is 78501077. The next prime is 78501089. The reversal of 78501085 is 58010587.

It is a cyclic number.

It is not a de Polignac number, because 78501085 - 2³ = 78501077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78501085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78501089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1312 + ... + 12598.

It is an arithmetic number, because the mean of its divisors is an integer number (6400296).

Almost surely, 2^78501085 is an apocalyptic number.

It is an amenable number.

78501085 is a deficient number, since it is larger than the sum of its proper divisors (23903651).

78501085 is a wasteful number, since it uses less digits than its factorization.

78501085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11412.

The product of its (nonzero) digits is 11200, while the sum is 34.

The square root of 78501085 is about 8860.0838032154. The cubic root of 78501085 is about 428.1788582678.

The spelling of 78501085 in words is "seventy-eight million, five hundred one thousand, eighty-five".