1678004 has 12 divisors (see below), whose sum is σ = 3091200. Its totient is φ = 794808.

The previous prime is 1677997. The next prime is 1678009. The reversal of 1678004 is 4008761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678009) 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, 10964 + ... + 11115.

It is an arithmetic number, because the mean of its divisors is an integer number (257600).

2^1678004 is an apocalyptic number.

It is an amenable number.

1678004 is a deficient number, since it is larger than the sum of its proper divisors (1413196).

1678004 is a wasteful number, since it uses less digits than its factorization.

1678004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22102 (or 22100 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1678004 is about 1295.3779371288. The cubic root of 1678004 is about 118.8313407621.

The spelling of 1678004 in words is "one million, six hundred seventy-eight thousand, four".