78605315 has 8 divisors (see below), whose sum is σ = 94951968. Its totient is φ = 62467200.

The previous prime is 78605311. The next prime is 78605321. The reversal of 78605315 is 51350687.

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

It is not a de Polignac number, because 78605315 - 2² = 78605311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78605311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51302 + ... + 52811.

It is an arithmetic number, because the mean of its divisors is an integer number (11868996).

Almost surely, 2^78605315 is an apocalyptic number.

78605315 is a deficient number, since it is larger than the sum of its proper divisors (16346653).

78605315 is a wasteful number, since it uses less digits than its factorization.

78605315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104269.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 78605315 is about 8865.9638505918. The cubic root of 78605315 is about 428.3682796192.

The spelling of 78605315 in words is "seventy-eight million, six hundred five thousand, three hundred fifteen".