1678066 has 16 divisors (see below), whose sum is σ = 2732184. Its totient is φ = 768384.

The previous prime is 1678037. The next prime is 1678067. The reversal of 1678066 is 6608761.

It can be written as a sum of positive squares in 4 ways, for example, as 606841 + 1071225 = 779^2 + 1035^2 .

It is not an unprimeable number, because it can be changed into a prime (1678067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5920 + ... + 6196.

2^1678066 is an apocalyptic number.

1678066 is a deficient number, since it is larger than the sum of its proper divisors (1054118).

1678066 is a wasteful number, since it uses less digits than its factorization.

1678066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1678066 is about 1295.4018681475. The cubic root of 1678066 is about 118.8328042971.

The spelling of 1678066 in words is "one million, six hundred seventy-eight thousand, sixty-six".