660343104 has 280 divisors, whose sum is σ = 2124334080. Its totient is φ = 202051584.

The previous prime is 660343027. The next prime is 660343109. The reversal of 660343104 is 401343066.

660343104 is a `hidden beast` number, since 6 + 603 + 43 + 10 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660343109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5199489 + ... + 5199615.

Almost surely, 2^660343104 is an apocalyptic number.

660343104 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 660343104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1062167040).

660343104 is an abundant number, since it is smaller than the sum of its proper divisors (1463990976).

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

660343104 is a wasteful number, since it uses less digits than its factorization.

660343104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 660343104 is about 25697.1419422472. The cubic root of 660343104 is about 870.8096149540.

The spelling of 660343104 in words is "six hundred sixty million, three hundred forty-three thousand, one hundred four".