666852480 has 512 divisors, whose sum is σ = 2790720000. Its totient is φ = 147308544.

The previous prime is 666852469. The next prime is 666852491. The reversal of 666852480 is 84258666.

It is an interprime number because it is at equal distance from previous prime (666852469) and next prime (666852491).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 4475446 + ... + 4475594.

It is an arithmetic number, because the mean of its divisors is an integer number (5450625).

Almost surely, 2^666852480 is an apocalyptic number.

666852480 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 666852480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395360000).

666852480 is an abundant number, since it is smaller than the sum of its proper divisors (2123867520).

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

666852480 is a wasteful number, since it uses less digits than its factorization.

666852480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 666852480 is about 25823.4869837518. The cubic root of 666852480 is about 873.6616186461.

The spelling of 666852480 in words is "six hundred sixty-six million, eight hundred fifty-two thousand, four hundred eighty".