665546632 has 16 divisors (see below), whose sum is σ = 1248313500. Its totient is φ = 332663040.

The previous prime is 665546627. The next prime is 665546659. The reversal of 665546632 is 236645566.

It can be written as a sum of positive squares in 2 ways, for example, as 530196676 + 135349956 = 23026^2 + 11634^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15532 + ... + 39652.

Almost surely, 2^665546632 is an apocalyptic number.

It is an amenable number.

665546632 is a deficient number, since it is larger than the sum of its proper divisors (582766868).

665546632 is a wasteful number, since it uses less digits than its factorization.

665546632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27576 (or 27572 counting only the distinct ones).

The product of its digits is 777600, while the sum is 43.

The square root of 665546632 is about 25798.1904791790. The cubic root of 665546632 is about 873.0909703062.

The spelling of 665546632 in words is "six hundred sixty-five million, five hundred forty-six thousand, six hundred thirty-two".