1668627 has 16 divisors (see below), whose sum is σ = 2580480. Its totient is φ = 1063656.

The previous prime is 1668619. The next prime is 1668629. The reversal of 1668627 is 7268661.

It is a happy number.

It is not a de Polignac number, because 1668627 - 2³ = 1668619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1668591 and 1668600.

It is not an unprimeable number, because it can be changed into a prime (1668629) 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 15 ways as a sum of consecutive naturals, for example, 723 + ... + 1964.

It is an arithmetic number, because the mean of its divisors is an integer number (161280).

2^1668627 is an apocalyptic number.

1668627 is a deficient number, since it is larger than the sum of its proper divisors (911853).

1668627 is a wasteful number, since it uses less digits than its factorization.

1668627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719 (or 2713 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 1668627 is about 1291.7534594496. The cubic root of 1668627 is about 118.6095765799.

The spelling of 1668627 in words is "one million, six hundred sixty-eight thousand, six hundred twenty-seven".