2055665 has 8 divisors (see below), whose sum is σ = 2552040. Its totient is φ = 1587712.

The previous prime is 2055649. The next prime is 2055673. The reversal of 2055665 is 5665502.

It can be written as a sum of positive squares in 4 ways, for example, as 839056 + 1216609 = 916^2 + 1103^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2055665 - 2⁴ = 2055649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 6944 + ... + 7233.

It is an arithmetic number, because the mean of its divisors is an integer number (319005).

2^2055665 is an apocalyptic number.

It is an amenable number.

2055665 is a deficient number, since it is larger than the sum of its proper divisors (496375).

2055665 is a wasteful number, since it uses less digits than its factorization.

2055665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14211.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 2055665 is about 1433.7590453071. The cubic root of 2055665 is about 127.1503169825.

The spelling of 2055665 in words is "two million, fifty-five thousand, six hundred sixty-five".