666486360 has 256 divisors, whose sum is σ = 2430259200. Its totient is φ = 161740800.

The previous prime is 666486349. The next prime is 666486371. The reversal of 666486360 is 63684666.

It is an interprime number because it is at equal distance from previous prime (666486349) and next prime (666486371).

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

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, 568575 + ... + 569745.

It is an arithmetic number, because the mean of its divisors is an integer number (9493200).

Almost surely, 2^666486360 is an apocalyptic number.

666486360 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 666486360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1215129600).

666486360 is an abundant number, since it is smaller than the sum of its proper divisors (1763772840).

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

666486360 is a wasteful number, since it uses less digits than its factorization.

666486360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The square root of 666486360 is about 25816.3971150120. The cubic root of 666486360 is about 873.5017014443.

The spelling of 666486360 in words is "six hundred sixty-six million, four hundred eighty-six thousand, three hundred sixty".