678710434 has 8 divisors (see below), whose sum is σ = 1018292688. Its totient is φ = 339279540.

The previous prime is 678710413. The next prime is 678710437. The reversal of 678710434 is 434017876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (678710437) 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, 25872 + ... + 45019.

It is an arithmetic number, because the mean of its divisors is an integer number (127286586).

Almost surely, 2^678710434 is an apocalyptic number.

678710434 is a deficient number, since it is larger than the sum of its proper divisors (339582254).

678710434 is a wasteful number, since it uses less digits than its factorization.

678710434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75680.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 678710434 is about 26052.0715874957. The cubic root of 678710434 is about 878.8097001110.

It can be divided in two parts, 67871043 and 4, that multiplied together give a palindrome (271484172).

The spelling of 678710434 in words is "six hundred seventy-eight million, seven hundred ten thousand, four hundred thirty-four".