612808 has 32 divisors (see below), whose sum is σ = 1359360. Its totient is φ = 253440.

The previous prime is 612797. The next prime is 612809. The reversal of 612808 is 808216.

It is not an unprimeable number, because it can be changed into a prime (612809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1560 + ... + 1912.

It is an arithmetic number, because the mean of its divisors is an integer number (42480).

2⁶¹²⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679680).

612808 is an abundant number, since it is smaller than the sum of its proper divisors (746552).

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

612808 is a wasteful number, since it uses less digits than its factorization.

612808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 612808 is about 782.8205413759. The cubic root of 612808 is about 84.9391952680.

The spelling of 612808 in words is "six hundred twelve thousand, eight hundred eight".