1665106 has 8 divisors (see below), whose sum is σ = 2504880. Its totient is φ = 830148.

The previous prime is 1665091. The next prime is 1665107. The reversal of 1665106 is 6015661.

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

It is not an unprimeable number, because it can be changed into a prime (1665107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (313110).

2^1665106 is an apocalyptic number.

1665106 is a deficient number, since it is larger than the sum of its proper divisors (839774).

1665106 is a wasteful number, since it uses less digits than its factorization.

1665106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1665106 is about 1290.3898635684. The cubic root of 1665106 is about 118.5260910936.

It can be divided in two parts, 1665 and 106, that added together give a palindrome (1771).

The spelling of 1665106 in words is "one million, six hundred sixty-five thousand, one hundred six".