678368871 has 8 divisors (see below), whose sum is σ = 1004990960. Its totient is φ = 452245896.

The previous prime is 678368857. The next prime is 678368921. The reversal of 678368871 is 178863876.

It is not a de Polignac number, because 678368871 - 2⁶ = 678368807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678368851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12562360 + ... + 12562413.

It is an arithmetic number, because the mean of its divisors is an integer number (125623870).

Almost surely, 2^678368871 is an apocalyptic number.

678368871 is a deficient number, since it is larger than the sum of its proper divisors (326622089).

678368871 is a wasteful number, since it uses less digits than its factorization.

678368871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25124782 (or 25124776 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 678368871 is about 26045.5153721327. The cubic root of 678368871 is about 878.6622541948.

The spelling of 678368871 in words is "six hundred seventy-eight million, three hundred sixty-eight thousand, eight hundred seventy-one".