605664100 has 72 divisors (see below), whose sum is σ = 1429361640. Its totient is φ = 221829120.

The previous prime is 605664079. The next prime is 605664113. The reversal of 605664100 is 1466506.

It can be written as a sum of positive squares in 12 ways, for example, as 19927296 + 585736804 = 4464^2 + 24202^2 .

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 58086 + ... + 67714.

It is an arithmetic number, because the mean of its divisors is an integer number (19852245).

Almost surely, 2^605664100 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 605664100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714680820).

605664100 is an abundant number, since it is smaller than the sum of its proper divisors (823697540).

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

605664100 is a wasteful number, since it uses less digits than its factorization.

605664100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9697 (or 9690 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 605664100 is about 24610.2438021244. The cubic root of 605664100 is about 846.0784055861.

The spelling of 605664100 in words is "six hundred five million, six hundred sixty-four thousand, one hundred".