66308760 has 256 divisors, whose sum is σ = 259200000. Its totient is φ = 15071616.

The previous prime is 66308741. The next prime is 66308791. The reversal of 66308760 is 6780366.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 370351 + ... + 370529.

It is an arithmetic number, because the mean of its divisors is an integer number (1012500).

Almost surely, 2^66308760 is an apocalyptic number.

66308760 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 66308760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129600000).

66308760 is an abundant number, since it is smaller than the sum of its proper divisors (192891240).

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

66308760 is a wasteful number, since it uses less digits than its factorization.

66308760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 66308760 is about 8143.0190961338. The cubic root of 66308760 is about 404.7532104158.

The spelling of 66308760 in words is "sixty-six million, three hundred eight thousand, seven hundred sixty".