78625317 has 8 divisors (see below), whose sum is σ = 105008896. Its totient is φ = 52329312.

The previous prime is 78625243. The next prime is 78625321. The reversal of 78625317 is 71352687.

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

It is not a de Polignac number, because 78625317 - 2⁷ = 78625189 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 (78625367) 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, 19768 + ... + 23409.

It is an arithmetic number, because the mean of its divisors is an integer number (13126112).

Almost surely, 2^78625317 is an apocalyptic number.

It is an amenable number.

78625317 is a deficient number, since it is larger than the sum of its proper divisors (26383579).

78625317 is a wasteful number, since it uses less digits than its factorization.

78625317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43787.

The product of its digits is 70560, while the sum is 39.

The square root of 78625317 is about 8867.0918005849. The cubic root of 78625317 is about 428.4046109015.

The spelling of 78625317 in words is "seventy-eight million, six hundred twenty-five thousand, three hundred seventeen".