4665398868 has 144 divisors (see below), whose sum is σ = 12981805200. Its totient is φ = 1404057600.

The previous prime is 4665398839. The next prime is 4665398879. The reversal of 4665398868 is 8688935664.

4665398868 is a `hidden beast` number, since 466 + 5 + 3 + 98 + 86 + 8 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 697910724 + 3967488144 = 26418^2 + 62988^2 .

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 47 ways as a sum of consecutive naturals, for example, 4206298 + ... + 4207406.

It is an arithmetic number, because the mean of its divisors is an integer number (90151425).

Almost surely, 2^4665398868 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 4665398868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6490902600).

4665398868 is an abundant number, since it is smaller than the sum of its proper divisors (8316406332).

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

4665398868 is a wasteful number, since it uses less digits than its factorization.

4665398868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322 (or 1317 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 63.

The square root of 4665398868 is about 68303.7251399951. The cubic root of 4665398868 is about 1670.9479681289.

The spelling of 4665398868 in words is "four billion, six hundred sixty-five million, three hundred ninety-eight thousand, eight hundred sixty-eight".