1608261 has 4 divisors (see below), whose sum is σ = 2144352. Its totient is φ = 1072172.

The previous prime is 1608259. The next prime is 1608283. The reversal of 1608261 is 1628061.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1628061 = 3 ⋅542687.

It is a cyclic number.

It is not a de Polignac number, because 1608261 - 2¹ = 1608259 is a prime.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1608241) 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, 268041 + ... + 268046.

It is an arithmetic number, because the mean of its divisors is an integer number (536088).

2^1608261 is an apocalyptic number.

It is an amenable number.

1608261 is a deficient number, since it is larger than the sum of its proper divisors (536091).

1608261 is an equidigital number, since it uses as much as digits as its factorization.

1608261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536090.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1608261 is about 1268.1723069047. The cubic root of 1608261 is about 117.1616583375.

The spelling of 1608261 in words is "one million, six hundred eight thousand, two hundred sixty-one".