608404091 has 4 divisors (see below), whose sum is σ = 613788312. Its totient is φ = 603019872.

The previous prime is 608404087. The next prime is 608404099. The reversal of 608404091 is 190404806.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 608404091 - 2² = 608404087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (608404099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2691941 + ... + 2692166.

It is an arithmetic number, because the mean of its divisors is an integer number (153447078).

Almost surely, 2^608404091 is an apocalyptic number.

608404091 is a deficient number, since it is larger than the sum of its proper divisors (5384221).

608404091 is a wasteful number, since it uses less digits than its factorization.

608404091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5384220.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 608404091 is about 24665.8486778785. The cubic root of 608404091 is about 847.3523571059.

Adding to 608404091 its reverse (190404806), we get a palindrome (798808897).

The spelling of 608404091 in words is "six hundred eight million, four hundred four thousand, ninety-one".