678269442 has 8 divisors (see below), whose sum is σ = 1356538896. Its totient is φ = 226089812.

The previous prime is 678269381. The next prime is 678269447. The reversal of 678269442 is 244962876.

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

678269442 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 678269391 and 678269400.

It is not an unprimeable number, because it can be changed into a prime (678269447) 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 3 ways as a sum of consecutive naturals, for example, 56522448 + ... + 56522459.

It is an arithmetic number, because the mean of its divisors is an integer number (169567362).

Almost surely, 2^678269442 is an apocalyptic number.

678269442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

678269442 is a wasteful number, since it uses less digits than its factorization.

678269442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113044912.

The product of its digits is 1161216, while the sum is 48.

The square root of 678269442 is about 26043.6065474811. The cubic root of 678269442 is about 878.6193233835.

The spelling of 678269442 in words is "six hundred seventy-eight million, two hundred sixty-nine thousand, four hundred forty-two".