2209655 has 24 divisors (see below), whose sum is σ = 3201120. Its totient is φ = 1458240.

The previous prime is 2209639. The next prime is 2209661. The reversal of 2209655 is 5569022.

It is not a de Polignac number, because 2209655 - 2⁴ = 2209639 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 23 ways as a sum of consecutive naturals, for example, 6950 + ... + 7260.

It is an arithmetic number, because the mean of its divisors is an integer number (133380).

2^2209655 is an apocalyptic number.

2209655 is a deficient number, since it is larger than the sum of its proper divisors (991465).

2209655 is a wasteful number, since it uses less digits than its factorization.

2209655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 2209655 is about 1486.4908341460. The cubic root of 2209655 is about 130.2491277973.

The spelling of 2209655 in words is "two million, two hundred nine thousand, six hundred fifty-five".