678064539 has 8 divisors (see below), whose sum is σ = 904346640. Its totient is φ = 451912736.

The previous prime is 678064537. The next prime is 678064561. The reversal of 678064539 is 935460876.

678064539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 678064539 - 2¹ = 678064537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (678064537) 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, 19704 + ... + 41765.

It is an arithmetic number, because the mean of its divisors is an integer number (113043330).

Almost surely, 2^678064539 is an apocalyptic number.

678064539 is a deficient number, since it is larger than the sum of its proper divisors (226282101).

678064539 is a wasteful number, since it uses less digits than its factorization.

678064539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65149.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 678064539 is about 26039.6724057735. The cubic root of 678064539 is about 878.5308384560.

The spelling of 678064539 in words is "six hundred seventy-eight million, sixty-four thousand, five hundred thirty-nine".