678835798 has 4 divisors (see below), whose sum is σ = 1018253700. Its totient is φ = 339417898.

The previous prime is 678835783. The next prime is 678835813. The reversal of 678835798 is 897538876.

678835798 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (678835783) and next prime (678835813).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169708948 + ... + 169708951.

It is an arithmetic number, because the mean of its divisors is an integer number (254563425).

Almost surely, 2^678835798 is an apocalyptic number.

678835798 is a deficient number, since it is larger than the sum of its proper divisors (339417902).

678835798 is a wasteful number, since it uses less digits than its factorization.

678835798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339417901.

The product of its digits is 20321280, while the sum is 61.

The square root of 678835798 is about 26054.4775038764. The cubic root of 678835798 is about 878.8638048324.

The spelling of 678835798 in words is "six hundred seventy-eight million, eight hundred thirty-five thousand, seven hundred ninety-eight".