1678268 has 6 divisors (see below), whose sum is σ = 2936976. Its totient is φ = 839132.

The previous prime is 1678267. The next prime is 1678277. The reversal of 1678268 is 8628761.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209780 + ... + 209787.

It is an arithmetic number, because the mean of its divisors is an integer number (489496).

2^1678268 is an apocalyptic number.

It is an amenable number.

1678268 is a deficient number, since it is larger than the sum of its proper divisors (1258708).

1678268 is a wasteful number, since it uses less digits than its factorization.

1678268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419571 (or 419569 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 1678268 is about 1295.4798338840. The cubic root of 1678268 is about 118.8375723382.

The spelling of 1678268 in words is "one million, six hundred seventy-eight thousand, two hundred sixty-eight".