2622665 has 12 divisors (see below), whose sum is σ = 3323844. Its totient is φ = 1986336.

The previous prime is 2622637. The next prime is 2622679. The reversal of 2622665 is 5662262.

It can be written as a sum of positive squares in 2 ways, for example, as 1923769 + 698896 = 1387^2 + 836^2 .

It is not a de Polignac number, because 2622665 - 2⁶ = 2622601 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 1079 + ... + 2531.

It is an arithmetic number, because the mean of its divisors is an integer number (276987).

2^2622665 is an apocalyptic number.

It is an amenable number.

2622665 is a deficient number, since it is larger than the sum of its proper divisors (701179).

2622665 is a wasteful number, since it uses less digits than its factorization.

2622665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496 (or 1477 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 2622665 is about 1619.4644176394. The cubic root of 2622665 is about 137.9052945395.

The spelling of 2622665 in words is "two million, six hundred twenty-two thousand, six hundred sixty-five".