1669166 has 8 divisors (see below), whose sum is σ = 2514864. Its totient is φ = 830880.

The previous prime is 1669163. The next prime is 1669177. The reversal of 1669166 is 6619661.

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

It is a super-2 number, since 2×1669166² = 5572230271112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669163) 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 3 ways as a sum of consecutive naturals, for example, 1250 + ... + 2213.

It is an arithmetic number, because the mean of its divisors is an integer number (314358).

2^1669166 is an apocalyptic number.

1669166 is a deficient number, since it is larger than the sum of its proper divisors (845698).

1669166 is a wasteful number, since it uses less digits than its factorization.

1669166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706.

The product of its digits is 11664, while the sum is 35.

The square root of 1669166 is about 1291.9620737467. The cubic root of 1669166 is about 118.6223462960.

The spelling of 1669166 in words is "one million, six hundred sixty-nine thousand, one hundred sixty-six".