666483081 has 16 divisors (see below), whose sum is σ = 969908160. Its totient is φ = 403729920.

The previous prime is 666483071. The next prime is 666483089. The reversal of 666483081 is 180384666.

It is a happy number.

It is not a de Polignac number, because 666483081 - 2¹¹ = 666481033 is a prime.

It is a super-2 number, since 2×666483081² = 888399394518505122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (666483089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89925 + ... + 97053.

It is an arithmetic number, because the mean of its divisors is an integer number (60619260).

Almost surely, 2^666483081 is an apocalyptic number.

It is an amenable number.

666483081 is a deficient number, since it is larger than the sum of its proper divisors (303425079).

666483081 is a wasteful number, since it uses less digits than its factorization.

666483081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9976.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 666483081 is about 25816.3336087834. Note that the first 3 decimals coincide. The cubic root of 666483081 is about 873.5002689484.

The spelling of 666483081 in words is "six hundred sixty-six million, four hundred eighty-three thousand, eighty-one".