678905230 has 16 divisors (see below), whose sum is σ = 1255057920. Its totient is φ = 264222432.

The previous prime is 678905203. The next prime is 678905287. The reversal of 678905230 is 32509876.

678905230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×678905230² = 921824622642705800, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917070 + ... + 917809.

It is an arithmetic number, because the mean of its divisors is an integer number (78441120).

Almost surely, 2^678905230 is an apocalyptic number.

678905230 is a deficient number, since it is larger than the sum of its proper divisors (576152690).

678905230 is a wasteful number, since it uses less digits than its factorization.

678905230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834923.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 678905230 is about 26055.8099087324. The cubic root of 678905230 is about 878.8937674986.

The spelling of 678905230 in words is "six hundred seventy-eight million, nine hundred five thousand, two hundred thirty".