1608969 has 4 divisors (see below), whose sum is σ = 2145296. Its totient is φ = 1072644.

The previous prime is 1608941. The next prime is 1608979. The reversal of 1608969 is 9698061.

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 not a de Polignac number, because 1608969 - 2⁸ = 1608713 is a prime.

It is a super-2 number, since 2×1608969² = 5177562485922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1608979) 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, 268159 + ... + 268164.

It is an arithmetic number, because the mean of its divisors is an integer number (536324).

2^1608969 is an apocalyptic number.

It is an amenable number.

1608969 is a deficient number, since it is larger than the sum of its proper divisors (536327).

1608969 is an equidigital number, since it uses as much as digits as its factorization.

1608969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536326.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1608969 is about 1268.4514180685. The cubic root of 1608969 is about 117.1788483924.

The spelling of 1608969 in words is "one million, six hundred eight thousand, nine hundred sixty-nine".