678807098 has 4 divisors (see below), whose sum is σ = 1018210650. Its totient is φ = 339403548.

The previous prime is 678807079. The next prime is 678807113. The reversal of 678807098 is 890708876.

678807098 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 can be written as a sum of positive squares in only one way, i.e., 628354489 + 50452609 = 25067^2 + 7103^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169701773 + ... + 169701776.

Almost surely, 2^678807098 is an apocalyptic number.

678807098 is a deficient number, since it is larger than the sum of its proper divisors (339403552).

678807098 is a wasteful number, since it uses less digits than its factorization.

678807098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339403551.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The square root of 678807098 is about 26053.9267289981. The cubic root of 678807098 is about 878.8514190454.

The spelling of 678807098 in words is "six hundred seventy-eight million, eight hundred seven thousand, ninety-eight".