612888220 has 48 divisors (see below), whose sum is σ = 1472486400. Its totient is φ = 209911104.

The previous prime is 612888209. The next prime is 612888223. The reversal of 612888220 is 22888216.

It is a self number, because there is not a number n which added to its sum of digits gives 612888220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612888223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184131 + ... + 187429.

It is an arithmetic number, because the mean of its divisors is an integer number (30676800).

Almost surely, 2^612888220 is an apocalyptic number.

It is an amenable number.

612888220 is an abundant number, since it is smaller than the sum of its proper divisors (859598180).

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

612888220 is a wasteful number, since it uses less digits than its factorization.

612888220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4642 (or 4640 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 612888220 is about 24756.5793275242. The cubic root of 612888220 is about 849.4290144515.

The spelling of 612888220 in words is "six hundred twelve million, eight hundred eighty-eight thousand, two hundred twenty".