2102665 has 8 divisors (see below), whose sum is σ = 2559168. Its totient is φ = 1658160.

The previous prime is 2102651. The next prime is 2102687. The reversal of 2102665 is 5662012.

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

It is not a de Polignac number, because 2102665 - 2¹³ = 2094473 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2607 + ... + 3316.

It is an arithmetic number, because the mean of its divisors is an integer number (319896).

2^2102665 is an apocalyptic number.

It is an amenable number.

2102665 is a deficient number, since it is larger than the sum of its proper divisors (456503).

2102665 is an equidigital number, since it uses as much as digits as its factorization.

2102665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5999.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2102665 is about 1450.0568954355. The cubic root of 2102665 is about 128.1120641312.

Adding to 2102665 its reverse (5662012), we get a palindrome (7764677).

The spelling of 2102665 in words is "two million, one hundred two thousand, six hundred sixty-five".