78085785 has 8 divisors (see below), whose sum is σ = 124937280. Its totient is φ = 41645744.

The previous prime is 78085751. The next prime is 78085789. The reversal of 78085785 is 58758087.

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

It is a cyclic number.

It is not a de Polignac number, because 78085785 - 2¹⁷ = 77954713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78085789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2602845 + ... + 2602874.

It is an arithmetic number, because the mean of its divisors is an integer number (15617160).

Almost surely, 2^78085785 is an apocalyptic number.

It is an amenable number.

78085785 is a deficient number, since it is larger than the sum of its proper divisors (46851495).

78085785 is a wasteful number, since it uses less digits than its factorization.

78085785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205727.

The product of its (nonzero) digits is 627200, while the sum is 48.

The square root of 78085785 is about 8836.6161509935. The cubic root of 78085785 is about 427.4224475442.

The spelling of 78085785 in words is "seventy-eight million, eighty-five thousand, seven hundred eighty-five".