1605896 has 16 divisors (see below), whose sum is σ = 3075840. Its totient is φ = 785680.

The previous prime is 1605889. The next prime is 1605907. The reversal of 1605896 is 6985061.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1760 + ... + 2511.

It is an arithmetic number, because the mean of its divisors is an integer number (192240).

2^1605896 is an apocalyptic number.

It is an amenable number.

1605896 is a deficient number, since it is larger than the sum of its proper divisors (1469944).

1605896 is a wasteful number, since it uses less digits than its factorization.

1605896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324 (or 4320 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1605896 is about 1267.2395195858. The cubic root of 1605896 is about 117.1042001565.

The spelling of 1605896 in words is "one million, six hundred five thousand, eight hundred ninety-six".