1669006 has 4 divisors (see below), whose sum is σ = 2503512. Its totient is φ = 834502.

The previous prime is 1668983. The next prime is 1669027. The reversal of 1669006 is 6009661.

It is a happy number.

It is a semiprime because it is the product of two 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 as a sum of consecutive naturals, namely, 417250 + ... + 417253.

It is an arithmetic number, because the mean of its divisors is an integer number (625878).

2^1669006 is an apocalyptic number.

1669006 is a deficient number, since it is larger than the sum of its proper divisors (834506).

1669006 is an equidigital number, since it uses as much as digits as its factorization.

1669006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834505.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1669006 is about 1291.9001509405. The cubic root of 1669006 is about 118.6185559437.

The spelling of 1669006 in words is "one million, six hundred sixty-nine thousand, six".