678834107 has 4 divisors (see below), whose sum is σ = 775810416. Its totient is φ = 581857800.

The previous prime is 678834103. The next prime is 678834119. The reversal of 678834107 is 701438876.

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

It is a cyclic number.

It is not a de Polignac number, because 678834107 - 2² = 678834103 is a prime.

It is a super-3 number, since 3×678834107³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678834103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48488144 + ... + 48488157.

It is an arithmetic number, because the mean of its divisors is an integer number (193952604).

Almost surely, 2^678834107 is an apocalyptic number.

678834107 is a deficient number, since it is larger than the sum of its proper divisors (96976309).

678834107 is an equidigital number, since it uses as much as digits as its factorization.

678834107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96976308.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 678834107 is about 26054.4450526201. The cubic root of 678834107 is about 878.8630750732.

The spelling of 678834107 in words is "six hundred seventy-eight million, eight hundred thirty-four thousand, one hundred seven".