660244480 has 192 divisors, whose sum is σ = 1852381440. Its totient is φ = 221184000.

The previous prime is 660244469. The next prime is 660244483. The reversal of 660244480 is 84442066.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660244483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4372405 + ... + 4372555.

It is an arithmetic number, because the mean of its divisors is an integer number (9647820).

Almost surely, 2^660244480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660244480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926190720).

660244480 is an abundant number, since it is smaller than the sum of its proper divisors (1192136960).

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

660244480 is a wasteful number, since it uses less digits than its factorization.

660244480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 660244480 is about 25695.2229023217. Note that the first 3 decimals coincide. The cubic root of 660244480 is about 870.7662602177.

The spelling of 660244480 in words is "six hundred sixty million, two hundred forty-four thousand, four hundred eighty".