78068985 has 16 divisors (see below), whose sum is σ = 126493440. Its totient is φ = 41109120.

The previous prime is 78068983. The next prime is 78068999. The reversal of 78068985 is 58986087.

It is a happy number.

It is not a de Polignac number, because 78068985 - 2¹ = 78068983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78068983) 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, 31756 + ... + 34125.

It is an arithmetic number, because the mean of its divisors is an integer number (7905840).

Almost surely, 2^78068985 is an apocalyptic number.

It is an amenable number.

78068985 is a deficient number, since it is larger than the sum of its proper divisors (48424455).

78068985 is a wasteful number, since it uses less digits than its factorization.

78068985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65968.

The product of its (nonzero) digits is 967680, while the sum is 51.

The square root of 78068985 is about 8835.6655097395. The cubic root of 78068985 is about 427.3917923183.

The spelling of 78068985 in words is "seventy-eight million, sixty-eight thousand, nine hundred eighty-five".