678065712 has 20 divisors (see below), whose sum is σ = 1751669880. Its totient is φ = 226021888.

The previous prime is 678065699. The next prime is 678065719. The reversal of 678065712 is 217560876.

It is not an unprimeable number, because it can be changed into a prime (678065719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7063137 + ... + 7063232.

It is an arithmetic number, because the mean of its divisors is an integer number (87583494).

Almost surely, 2^678065712 is an apocalyptic number.

It is an amenable number.

678065712 is an abundant number, since it is smaller than the sum of its proper divisors (1073604168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678065712 is a wasteful number, since it uses less digits than its factorization.

678065712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14126380 (or 14126374 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 678065712 is about 26039.6949290886. The cubic root of 678065712 is about 878.5313450529.

The spelling of 678065712 in words is "six hundred seventy-eight million, sixty-five thousand, seven hundred twelve".