678061839 has 16 divisors (see below), whose sum is σ = 1112717312. Its totient is φ = 357658848.

The previous prime is 678061837. The next prime is 678061841. The reversal of 678061839 is 938160876.

678061839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (678061837) and next prime (678061841).

It is not a de Polignac number, because 678061839 - 2¹ = 678061837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678061837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1241599 + ... + 1242144.

It is an arithmetic number, because the mean of its divisors is an integer number (69544832).

Almost surely, 2^678061839 is an apocalyptic number.

678061839 is a deficient number, since it is larger than the sum of its proper divisors (434655473).

678061839 is a wasteful number, since it uses less digits than its factorization.

678061839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483766.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 678061839 is about 26039.6205617517. The cubic root of 678061839 is about 878.5296723741.

The spelling of 678061839 in words is "six hundred seventy-eight million, sixty-one thousand, eight hundred thirty-nine".