645333088 has 24 divisors (see below), whose sum is σ = 1294474608. Its totient is φ = 316577664.

The previous prime is 645333061. The next prime is 645333089. The reversal of 645333088 is 880333546.

It is a self number, because there is not a number n which added to its sum of digits gives 645333088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645333089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188556 + ... + 191947.

It is an arithmetic number, because the mean of its divisors is an integer number (53936442).

Almost surely, 2^645333088 is an apocalyptic number.

It is an amenable number.

645333088 is an abundant number, since it is smaller than the sum of its proper divisors (649141520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

645333088 is a wasteful number, since it uses less digits than its factorization.

645333088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380566 (or 380558 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 645333088 is about 25403.4070155954. The cubic root of 645333088 is about 864.1609639519.

The spelling of 645333088 in words is "six hundred forty-five million, three hundred thirty-three thousand, eighty-eight".