1608961 has 4 divisors (see below), whose sum is σ = 1612800. Its totient is φ = 1605124.

The previous prime is 1608941. The next prime is 1608979. The reversal of 1608961 is 1698061.

It is a happy number.

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 1608961 - 2⁹ = 1608449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1608911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1201 + ... + 2158.

It is an arithmetic number, because the mean of its divisors is an integer number (403200).

2^1608961 is an apocalyptic number.

It is an amenable number.

1608961 is a deficient number, since it is larger than the sum of its proper divisors (3839).

1608961 is an equidigital number, since it uses as much as digits as its factorization.

1608961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1608961 is about 1268.4482646131. The cubic root of 1608961 is about 117.1786541827.

The spelling of 1608961 in words is "one million, six hundred eight thousand, nine hundred sixty-one".