2208690 has 96 divisors (see below), whose sum is σ = 6604416. Its totient is φ = 506880.

The previous prime is 2208683. The next prime is 2208697. The reversal of 2208690 is 968022.

2208690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2208683) and next prime (2208697).

It is a super-2 number, since 2×2208690² = 9756623032200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2208697) 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 47 ways as a sum of consecutive naturals, for example, 22722 + ... + 22818.

It is an arithmetic number, because the mean of its divisors is an integer number (68796).

2^2208690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2208690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3302208).

2208690 is an abundant number, since it is smaller than the sum of its proper divisors (4395726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2208690 is a wasteful number, since it uses less digits than its factorization.

2208690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2208690 is about 1486.1662087398. The cubic root of 2208690 is about 130.2301642471.

The spelling of 2208690 in words is "two million, two hundred eight thousand, six hundred ninety".