678327438 has 32 divisors (see below), whose sum is σ = 1475289504. Its totient is φ = 207055872.

The previous prime is 678327437. The next prime is 678327439. The reversal of 678327438 is 834723876.

678327438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (678327437) and next prime (678327439).

It is a super-2 number, since 2×678327438² = 920256226287287688, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678327437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86095 + ... + 93642.

It is an arithmetic number, because the mean of its divisors is an integer number (46102797).

Almost surely, 2^678327438 is an apocalyptic number.

678327438 is an abundant number, since it is smaller than the sum of its proper divisors (796962066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678327438 is a wasteful number, since it uses less digits than its factorization.

678327438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179796.

The product of its digits is 1354752, while the sum is 48.

The square root of 678327438 is about 26044.7199639389. The cubic root of 678327438 is about 878.6443650316.

The spelling of 678327438 in words is "six hundred seventy-eight million, three hundred twenty-seven thousand, four hundred thirty-eight".