480666661 has 8 divisors (see below), whose sum is σ = 486644760. Its totient is φ = 474701568.

The previous prime is 480666607. The next prime is 480666671. The reversal of 480666661 is 166666084.

It can be written as a sum of positive squares in 4 ways, for example, as 15444900 + 465221761 = 3930^2 + 21569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 480666661 - 2²⁵ = 447112229 is a prime.

It is a super-3 number, since 3×480666661³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (480666671) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 86025 + ... + 91441.

It is an arithmetic number, because the mean of its divisors is an integer number (60830595).

Almost surely, 2^480666661 is an apocalyptic number.

It is an amenable number.

480666661 is a deficient number, since it is larger than the sum of its proper divisors (5978099).

480666661 is an equidigital number, since it uses as much as digits as its factorization.

480666661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6503.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 480666661 is about 21924.1114073068. Note that the first 3 decimals coincide. The cubic root of 480666661 is about 783.3358452110.

The spelling of 480666661 in words is "four hundred eighty million, six hundred sixty-six thousand, six hundred sixty-one".