1105666 has 4 divisors (see below), whose sum is σ = 1658502. Its totient is φ = 552832.

The previous prime is 1105661. The next prime is 1105669. The reversal of 1105666 is 6665011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 594441 + 511225 = 771^2 + 715^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1105666.

It is not an unprimeable number, because it can be changed into a prime (1105661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276415 + ... + 276418.

2^1105666 is an apocalyptic number.

1105666 is a deficient number, since it is larger than the sum of its proper divisors (552836).

1105666 is an equidigital number, since it uses as much as digits as its factorization.

1105666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552835.

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

The square root of 1105666 is about 1051.5065382583. The cubic root of 1105666 is about 103.4049474666.

It can be divided in two parts, 1105 and 666, that added together give a palindrome (1771).

The spelling of 1105666 in words is "one million, one hundred five thousand, six hundred sixty-six".