1678061 has 32 divisors (see below), whose sum is σ = 2334720. Its totient is φ = 1166400.

The previous prime is 1678037. The next prime is 1678067. The reversal of 1678061 is 1608761.

It is a cyclic number.

It is not a de Polignac number, because 1678061 - 2⁶ = 1677997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678067) 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 in 31 ways as a sum of consecutive naturals, for example, 45335 + ... + 45371.

It is an arithmetic number, because the mean of its divisors is an integer number (72960).

2^1678061 is an apocalyptic number.

1678061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1678061 is a deficient number, since it is larger than the sum of its proper divisors (656659).

1678061 is a wasteful number, since it uses less digits than its factorization.

1678061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1678061 is about 1295.3999382430. The cubic root of 1678061 is about 118.8326862714.

It can be divided in two parts, 167 and 8061, that added together give a palindrome (8228).

The spelling of 1678061 in words is "one million, six hundred seventy-eight thousand, sixty-one".