678604839 has 16 divisors (see below), whose sum is σ = 988627584. Its totient is φ = 410623200.

The previous prime is 678604837. The next prime is 678604841. The reversal of 678604839 is 938406876.

It is an interprime number because it is at equal distance from previous prime (678604837) and next prime (678604841).

It is not a de Polignac number, because 678604839 - 2¹ = 678604837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 678604791 and 678604800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678604837) 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 15 ways as a sum of consecutive naturals, for example, 5229 + ... + 37209.

It is an arithmetic number, because the mean of its divisors is an integer number (61789224).

Almost surely, 2^678604839 is an apocalyptic number.

678604839 is a deficient number, since it is larger than the sum of its proper divisors (310022745).

678604839 is a wasteful number, since it uses less digits than its factorization.

678604839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32638.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 678604839 is about 26050.0448943951. The cubic root of 678604839 is about 878.7641221450.

The spelling of 678604839 in words is "six hundred seventy-eight million, six hundred four thousand, eight hundred thirty-nine".