78605049 has 8 divisors (see below), whose sum is σ = 104880832. Its totient is φ = 52366320.

The previous prime is 78605041. The next prime is 78605069. The reversal of 78605049 is 94050687.

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

It is not a de Polignac number, because 78605049 - 2³ = 78605041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78604998 and 78605016.

It is not an unprimeable number, because it can be changed into a prime (78605041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3862 + ... + 13119.

It is an arithmetic number, because the mean of its divisors is an integer number (13110104).

Almost surely, 2^78605049 is an apocalyptic number.

It is an amenable number.

78605049 is a deficient number, since it is larger than the sum of its proper divisors (26275783).

78605049 is a wasteful number, since it uses less digits than its factorization.

78605049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18527.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 78605049 is about 8865.9488493900. The cubic root of 78605049 is about 428.3677964199.

The spelling of 78605049 in words is "seventy-eight million, six hundred five thousand, forty-nine".