655616444 has 24 divisors (see below), whose sum is σ = 1311982560. Its totient is φ = 280817856.

The previous prime is 655616417. The next prime is 655616447. The reversal of 655616444 is 444616556.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655616447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52274 + ... + 63590.

It is an arithmetic number, because the mean of its divisors is an integer number (54665940).

Almost surely, 2^655616444 is an apocalyptic number.

It is an amenable number.

655616444 is an abundant number, since it is smaller than the sum of its proper divisors (656366116).

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

655616444 is a wasteful number, since it uses less digits than its factorization.

655616444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13397 (or 13395 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

The square root of 655616444 is about 25605.0081819944. The cubic root of 655616444 is about 868.7269194289.

The spelling of 655616444 in words is "six hundred fifty-five million, six hundred sixteen thousand, four hundred forty-four".