78422065 has 8 divisors (see below), whose sum is σ = 98198208. Its totient is φ = 60009840.

The previous prime is 78422059. The next prime is 78422077. The reversal of 78422065 is 56022487.

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

It is not a de Polignac number, because 78422065 - 2¹³ = 78413873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78422065.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340851 + ... + 341080.

It is an arithmetic number, because the mean of its divisors is an integer number (12274776).

Almost surely, 2^78422065 is an apocalyptic number.

It is an amenable number.

78422065 is a deficient number, since it is larger than the sum of its proper divisors (19776143).

78422065 is a wasteful number, since it uses less digits than its factorization.

78422065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681959.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 78422065 is about 8855.6233546826. The cubic root of 78422065 is about 428.0351402859.

The spelling of 78422065 in words is "seventy-eight million, four hundred twenty-two thousand, sixty-five".