78758579 has 8 divisors (see below), whose sum is σ = 79590288. Its totient is φ = 77931360.

The previous prime is 78758557. The next prime is 78758593. The reversal of 78758579 is 97585787.

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 78758579 - 2¹² = 78754483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78758549) 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, 42584 + ... + 44394.

It is an arithmetic number, because the mean of its divisors is an integer number (9948786).

Almost surely, 2^78758579 is an apocalyptic number.

78758579 is a deficient number, since it is larger than the sum of its proper divisors (831709).

78758579 is a wasteful number, since it uses less digits than its factorization.

78758579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245.

The product of its digits is 4939200, while the sum is 56.

The square root of 78758579 is about 8874.6030333756. The cubic root of 78758579 is about 428.6465085235.

The spelling of 78758579 in words is "seventy-eight million, seven hundred fifty-eight thousand, five hundred seventy-nine".