612808218 has 24 divisors (see below), whose sum is σ = 1448456256. Its totient is φ = 185699400.

The previous prime is 612808213. The next prime is 612808247. The reversal of 612808218 is 812808216.

It is not an unprimeable number, because it can be changed into a prime (612808213) 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 11 ways as a sum of consecutive naturals, for example, 1547298 + ... + 1547693.

It is an arithmetic number, because the mean of its divisors is an integer number (60352344).

Almost surely, 2^612808218 is an apocalyptic number.

612808218 is an abundant number, since it is smaller than the sum of its proper divisors (835648038).

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

612808218 is a wasteful number, since it uses less digits than its factorization.

612808218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095010 (or 3095007 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 612808218 is about 24754.9635022959. The cubic root of 612808218 is about 849.3920534012.

The spelling of 612808218 in words is "six hundred twelve million, eight hundred eight thousand, two hundred eighteen".