666080352 has 144 divisors (see below), whose sum is σ = 2239604640. Its totient is φ = 183730176.

The previous prime is 666080347. The next prime is 666080357. The reversal of 666080352 is 253080666.

It is an interprime number because it is at equal distance from previous prime (666080347) and next prime (666080357).

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666080357) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52768 + ... + 64160.

It is an arithmetic number, because the mean of its divisors is an integer number (15552810).

Almost surely, 2^666080352 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 666080352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1119802320).

666080352 is an abundant number, since it is smaller than the sum of its proper divisors (1573524288).

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

666080352 is a wasteful number, since it uses less digits than its factorization.

666080352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11445 (or 11434 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 666080352 is about 25808.5325425527. The cubic root of 666080352 is about 873.3242931035.

The spelling of 666080352 in words is "six hundred sixty-six million, eighty thousand, three hundred fifty-two".