8257712678 has 16 divisors (see below), whose sum is σ = 12930160896. Its totient is φ = 3947799240.

The previous prime is 8257712657. The next prime is 8257712713. The reversal of 8257712678 is 8762177528.

It is a Curzon number.

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, 88793 + ... + 156203.

It is an arithmetic number, because the mean of its divisors is an integer number (808135056).

Almost surely, 2^8257712678 is an apocalyptic number.

8257712678 is a deficient number, since it is larger than the sum of its proper divisors (4672448218).

8257712678 is a wasteful number, since it uses less digits than its factorization.

8257712678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70099.

The product of its digits is 2634240, while the sum is 53.

The square root of 8257712678 is about 90871.9575996908. The cubic root of 8257712678 is about 2021.2494865762.

The spelling of 8257712678 in words is "eight billion, two hundred fifty-seven million, seven hundred twelve thousand, six hundred seventy-eight".