66480000 has 160 divisors (see below), whose sum is σ = 221460360. Its totient is φ = 17664000.

The previous prime is 66479969. The next prime is 66480019. The reversal of 66480000 is 8466.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 239862 + ... + 240138.

Almost surely, 2^66480000 is an apocalyptic number.

66480000 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 66480000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110730180).

66480000 is an abundant number, since it is smaller than the sum of its proper divisors (154980360).

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

66480000 is an equidigital number, since it uses as much as digits as its factorization.

66480000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 66480000 is about 8153.5268442558. The cubic root of 66480000 is about 405.1013311453.

Adding to 66480000 its reverse (8466), we get a palindrome (66488466).

The spelling of 66480000 in words is "sixty-six million, four hundred eighty thousand".