8705420078 has 16 divisors (see below), whose sum is σ = 13963154544. Its totient is φ = 4056105600.

The previous prime is 8705420069. The next prime is 8705420111. The reversal of 8705420078 is 8700245078.

It is a congruent number.

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, 1264100 + ... + 1270967.

It is an arithmetic number, because the mean of its divisors is an integer number (872697159).

Almost surely, 2^8705420078 is an apocalyptic number.

8705420078 is a deficient number, since it is larger than the sum of its proper divisors (5257734466).

8705420078 is a wasteful number, since it uses less digits than its factorization.

8705420078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535187.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 8705420078 is about 93302.8406748691. The cubic root of 8705420078 is about 2057.1371359413.

The spelling of 8705420078 in words is "eight billion, seven hundred five million, four hundred twenty thousand, seventy-eight".