2706665 has 8 divisors (see below), whose sum is σ = 3497928. Its totient is φ = 1998720.

The previous prime is 2706653. The next prime is 2706667. The reversal of 2706665 is 5666072.

2706665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 609961 + 2096704 = 781^2 + 1448^2 .

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

It is not a de Polignac number, because 2706665 - 2⁶ = 2706601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2706667) 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 7 ways as a sum of consecutive naturals, for example, 20756 + ... + 20885.

It is an arithmetic number, because the mean of its divisors is an integer number (437241).

2^2706665 is an apocalyptic number.

It is an amenable number.

2706665 is a deficient number, since it is larger than the sum of its proper divisors (791263).

2706665 is a wasteful number, since it uses less digits than its factorization.

2706665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41659.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 2706665 is about 1645.1945173748. The cubic root of 2706665 is about 139.3621493377.

The spelling of 2706665 in words is "two million, seven hundred six thousand, six hundred sixty-five".