1666022 has 8 divisors (see below), whose sum is σ = 2536536. Its totient is φ = 820512.

The previous prime is 1666019. The next prime is 1666037. The reversal of 1666022 is 2206661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6083 + ... + 6350.

It is an arithmetic number, because the mean of its divisors is an integer number (317067).

2^1666022 is an apocalyptic number.

1666022 is a deficient number, since it is larger than the sum of its proper divisors (870514).

1666022 is a wasteful number, since it uses less digits than its factorization.

1666022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12502.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1666022 is about 1290.7447462609. The cubic root of 1666022 is about 118.5478214413.

The spelling of 1666022 in words is "one million, six hundred sixty-six thousand, twenty-two".