6645593002 has 8 divisors (see below), whose sum is σ = 9970359012. Its totient is φ = 3322140000.

The previous prime is 6645592997. The next prime is 6645593023. The reversal of 6645593002 is 2003955466.

It can be written as a sum of positive squares in 2 ways, for example, as 5069582401 + 1576010601 = 71201^2 + 39699^2 .

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

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, 315499 + ... + 335902.

Almost surely, 2^6645593002 is an apocalyptic number.

6645593002 is a deficient number, since it is larger than the sum of its proper divisors (3324766010).

6645593002 is a wasteful number, since it uses less digits than its factorization.

6645593002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656504.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 6645593002 is about 81520.5066348339. The cubic root of 6645593002 is about 1880.0868567461.

The spelling of 6645593002 in words is "six billion, six hundred forty-five million, five hundred ninety-three thousand, two".