78418085 has 8 divisors (see below), whose sum is σ = 94262400. Its totient is φ = 62627344.

The previous prime is 78418061. The next prime is 78418091. The reversal of 78418085 is 58081487.

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 78418085 - 2¹⁸ = 78155941 is a prime.

It is a super-2 number, since 2×78418085² = 12298792110134450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10097 + ... + 16086.

It is an arithmetic number, because the mean of its divisors is an integer number (11782800).

Almost surely, 2^78418085 is an apocalyptic number.

It is an amenable number.

78418085 is a deficient number, since it is larger than the sum of its proper divisors (15844315).

78418085 is a wasteful number, since it uses less digits than its factorization.

78418085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26787.

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 78418085 is about 8855.3986358605. The cubic root of 78418085 is about 428.0278990897.

The spelling of 78418085 in words is "seventy-eight million, four hundred eighteen thousand, eighty-five".