666060240 has 80 divisors (see below), whose sum is σ = 2073974400. Its totient is φ = 176825856.

The previous prime is 666060233. The next prime is 666060331. The reversal of 666060240 is 42060666.

666060240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 666060198 and 666060207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48901 + ... + 61019.

It is an arithmetic number, because the mean of its divisors is an integer number (25924680).

Almost surely, 2^666060240 is an apocalyptic number.

666060240 is a gapful number since it is divisible by the number (60) 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 666060240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036987200).

666060240 is an abundant number, since it is smaller than the sum of its proper divisors (1407914160).

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

666060240 is a wasteful number, since it uses less digits than its factorization.

666060240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12364 (or 12358 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 666060240 is about 25808.1429010303. The cubic root of 666060240 is about 873.3155031355.

The spelling of 666060240 in words is "six hundred sixty-six million, sixty thousand, two hundred forty".