611808 has 24 divisors (see below), whose sum is σ = 1606248. Its totient is φ = 203904.

The previous prime is 611803. The next prime is 611827. The reversal of 611808 is 808116.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611801) 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, 3091 + ... + 3282.

It is an arithmetic number, because the mean of its divisors is an integer number (66927).

2⁶¹¹⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

611808 is an abundant number, since it is smaller than the sum of its proper divisors (994440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611808 is a wasteful number, since it uses less digits than its factorization.

611808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386 (or 6378 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 611808 is about 782.1815645999. The cubic root of 611808 is about 84.8929679345.

The spelling of 611808 in words is "six hundred eleven thousand, eight hundred eight".