78860285 has 16 divisors (see below), whose sum is σ = 109987200. Its totient is φ = 53157696.

The previous prime is 78860267. The next prime is 78860291. The reversal of 78860285 is 58206887.

It is a cyclic number.

It is not a de Polignac number, because 78860285 - 2²⁰ = 77811709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17030 + ... + 21159.

It is an arithmetic number, because the mean of its divisors is an integer number (6874200).

Almost surely, 2^78860285 is an apocalyptic number.

It is an amenable number.

78860285 is a deficient number, since it is larger than the sum of its proper divisors (31126915).

78860285 is a wasteful number, since it uses less digits than its factorization.

78860285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38260.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 78860285 is about 8880.3313564303. The cubic root of 78860285 is about 428.8309420575.

The spelling of 78860285 in words is "seventy-eight million, eight hundred sixty thousand, two hundred eighty-five".