78682579 has 8 divisors (see below), whose sum is σ = 83872800. Its totient is φ = 73554816.

The previous prime is 78682547. The next prime is 78682601. The reversal of 78682579 is 97528687.

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 78682579 - 2⁵ = 78682547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78682519) 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, 12999 + ... + 18064.

It is an arithmetic number, because the mean of its divisors is an integer number (10484100).

Almost surely, 2^78682579 is an apocalyptic number.

78682579 is a deficient number, since it is larger than the sum of its proper divisors (5190221).

78682579 is a wasteful number, since it uses less digits than its factorization.

78682579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31229.

The product of its digits is 1693440, while the sum is 52.

The square root of 78682579 is about 8870.3201182370. The cubic root of 78682579 is about 428.5085865372.

The spelling of 78682579 in words is "seventy-eight million, six hundred eighty-two thousand, five hundred seventy-nine".