666130176 has 144 divisors (see below), whose sum is σ = 2086106400. Its totient is φ = 208945152.

The previous prime is 666130123. The next prime is 666130189. The reversal of 666130176 is 671031666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×666130176² = 887458822755581952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 666130176.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114670 + ... + 120338.

It is an arithmetic number, because the mean of its divisors is an integer number (14486850).

Almost surely, 2^666130176 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 666130176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1043053200).

666130176 is an abundant number, since it is smaller than the sum of its proper divisors (1419976224).

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

666130176 is a wasteful number, since it uses less digits than its factorization.

666130176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5711 (or 5691 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 666130176 is about 25809.4977866676. The cubic root of 666130176 is about 873.3460679663.

The spelling of 666130176 in words is "six hundred sixty-six million, one hundred thirty thousand, one hundred seventy-six".