665146822484 has 24 divisors (see below), whose sum is σ = 1180002456360. Its totient is φ = 328003651584.

The previous prime is 665146822469. The next prime is 665146822603. The reversal of 665146822484 is 484228641566.

It can be written as a sum of positive squares in 4 ways, for example, as 1606246084 + 663540576400 = 40078^2 + 814580^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11655332 + ... + 11712260.

It is an arithmetic number, because the mean of its divisors is an integer number (49166769015).

Almost surely, 2^665146822484 is an apocalyptic number.

It is an amenable number.

665146822484 is a deficient number, since it is larger than the sum of its proper divisors (514855633876).

665146822484 is a wasteful number, since it uses less digits than its factorization.

665146822484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97019 (or 97017 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 56.

The spelling of 665146822484 in words is "six hundred sixty-five billion, one hundred forty-six million, eight hundred twenty-two thousand, four hundred eighty-four".