678470930 has 8 divisors (see below), whose sum is σ = 1221247692. Its totient is φ = 271388368.

The previous prime is 678470927. The next prime is 678470953. The reversal of 678470930 is 39074876.

It can be written as a sum of positive squares in 2 ways, for example, as 653978329 + 24492601 = 25573^2 + 4949^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33923537 + ... + 33923556.

Almost surely, 2^678470930 is an apocalyptic number.

678470930 is a deficient number, since it is larger than the sum of its proper divisors (542776762).

678470930 is a wasteful number, since it uses less digits than its factorization.

678470930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67847100.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 678470930 is about 26047.4745416902. The cubic root of 678470930 is about 878.7063162079.

The spelling of 678470930 in words is "six hundred seventy-eight million, four hundred seventy thousand, nine hundred thirty".