666175488 has 96 divisors (see below), whose sum is σ = 1937688480. Its totient is φ = 201850880.

The previous prime is 666175457. The next prime is 666175547. The reversal of 666175488 is 884571666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 666175488.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62656 + ... + 72512.

It is an arithmetic number, because the mean of its divisors is an integer number (20184255).

Almost surely, 2^666175488 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 666175488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968844240).

666175488 is an abundant number, since it is smaller than the sum of its proper divisors (1271512992).

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

666175488 is a wasteful number, since it uses less digits than its factorization.

666175488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9893 (or 9873 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The square root of 666175488 is about 25810.3755881235. The cubic root of 666175488 is about 873.3658699815.

The spelling of 666175488 in words is "six hundred sixty-six million, one hundred seventy-five thousand, four hundred eighty-eight".