78485807 has 8 divisors (see below), whose sum is σ = 79606800. Its totient is φ = 77370304.

The previous prime is 78485801. The next prime is 78485839. The reversal of 78485807 is 70858487.

It is a happy number.

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 78485807 - 2⁴ = 78485791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78485801) 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, 33488 + ... + 35754.

It is an arithmetic number, because the mean of its divisors is an integer number (9950850).

Almost surely, 2^78485807 is an apocalyptic number.

78485807 is a deficient number, since it is larger than the sum of its proper divisors (1120993).

78485807 is a wasteful number, since it uses less digits than its factorization.

78485807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745.

The product of its (nonzero) digits is 501760, while the sum is 47.

The square root of 78485807 is about 8859.2215798003. The cubic root of 78485807 is about 428.1510788597.

The spelling of 78485807 in words is "seventy-eight million, four hundred eighty-five thousand, eight hundred seven".