2208857 has 4 divisors (see below), whose sum is σ = 2524416. Its totient is φ = 1893300.

The previous prime is 2208853. The next prime is 2208887. The reversal of 2208857 is 7588022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2208857 - 2² = 2208853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2208853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157769 + ... + 157782.

It is an arithmetic number, because the mean of its divisors is an integer number (631104).

2^2208857 is an apocalyptic number.

It is an amenable number.

2208857 is a deficient number, since it is larger than the sum of its proper divisors (315559).

2208857 is an equidigital number, since it uses as much as digits as its factorization.

2208857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315558.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2208857 is about 1486.2223925106. Note that the first 3 decimals coincide. The cubic root of 2208857 is about 130.2334464173.

It can be divided in two parts, 2 and 208857, that multiplied together give a palindrome (417714).

The spelling of 2208857 in words is "two million, two hundred eight thousand, eight hundred fifty-seven".