2005657208 has 8 divisors (see below), whose sum is σ = 3760607280. Its totient is φ = 1002828600.

The previous prime is 2005657177. The next prime is 2005657211. The reversal of 2005657208 is 8027565002.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125353568 + ... + 125353583.

It is an arithmetic number, because the mean of its divisors is an integer number (470075910).

Almost surely, 2^2005657208 is an apocalyptic number.

It is an amenable number.

2005657208 is a deficient number, since it is larger than the sum of its proper divisors (1754950072).

2005657208 is a wasteful number, since it uses less digits than its factorization.

2005657208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250707157 (or 250707153 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 2005657208 is about 44784.5643944429. The cubic root of 2005657208 is about 1261.1078708223.

The spelling of 2005657208 in words is "two billion, five million, six hundred fifty-seven thousand, two hundred eight".