1105666565 has 8 divisors (see below), whose sum is σ = 1327198848. Its totient is φ = 884267280.

The previous prime is 1105666547. The next prime is 1105666571. The reversal of 1105666565 is 5656665011.

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

It is not a de Polignac number, because 1105666565 - 2⁶ = 1105666501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13937 + ... + 49046.

It is an arithmetic number, because the mean of its divisors is an integer number (165899856).

Almost surely, 2^1105666565 is an apocalyptic number.

It is an amenable number.

1105666565 is a deficient number, since it is larger than the sum of its proper divisors (221532283).

1105666565 is an equidigital number, since it uses as much as digits as its factorization.

1105666565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66499.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 1105666565 is about 33251.5648503946. The cubic root of 1105666565 is about 1034.0496508002.

The spelling of 1105666565 in words is "one billion, one hundred five million, six hundred sixty-six thousand, five hundred sixty-five".