660799104 has 256 divisors, whose sum is σ = 2129760000. Its totient is φ = 181235712.

The previous prime is 660799079. The next prime is 660799109. The reversal of 660799104 is 401997066.

660799104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660799109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3819562 + ... + 3819734.

It is an arithmetic number, because the mean of its divisors is an integer number (8319375).

Almost surely, 2^660799104 is an apocalyptic number.

660799104 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660799104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064880000).

660799104 is an abundant number, since it is smaller than the sum of its proper divisors (1468960896).

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

660799104 is a wasteful number, since it uses less digits than its factorization.

660799104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 660799104 is about 25706.0129930723. The cubic root of 660799104 is about 871.0100147228.

The spelling of 660799104 in words is "six hundred sixty million, seven hundred ninety-nine thousand, one hundred four".