678839330 has 32 divisors (see below), whose sum is σ = 1343913984. Its totient is φ = 245313216.

The previous prime is 678839297. The next prime is 678839339. The reversal of 678839330 is 33938876.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (678839339) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 49442 + ... + 61661.

It is an arithmetic number, because the mean of its divisors is an integer number (41997312).

Almost surely, 2^678839330 is an apocalyptic number.

678839330 is a deficient number, since it is larger than the sum of its proper divisors (665074654).

678839330 is a wasteful number, since it uses less digits than its factorization.

678839330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111170.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 678839330 is about 26054.5452848443. The cubic root of 678839330 is about 878.8653290800.

The spelling of 678839330 in words is "six hundred seventy-eight million, eight hundred thirty-nine thousand, three hundred thirty".