78385085 has 8 divisors (see below), whose sum is σ = 94258176. Its totient is φ = 62577360.

The previous prime is 78385033. The next prime is 78385093. The reversal of 78385085 is 58058387.

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

It is a de Polignac number, because none of the positive numbers 2^k-78385085 is a prime.

It is a super-2 number, since 2×78385085² = 12288443100914450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13661 + ... + 18530.

It is an arithmetic number, because the mean of its divisors is an integer number (11782272).

Almost surely, 2^78385085 is an apocalyptic number.

It is an amenable number.

78385085 is a deficient number, since it is larger than the sum of its proper divisors (15873091).

78385085 is a wasteful number, since it uses less digits than its factorization.

78385085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32683.

The product of its (nonzero) digits is 268800, while the sum is 44.

The square root of 78385085 is about 8853.5351696370. The cubic root of 78385085 is about 427.9678495808.

The spelling of 78385085 in words is "seventy-eight million, three hundred eighty-five thousand, eighty-five".