645330206633 has 24 divisors (see below), whose sum is σ = 783410808960. Its totient is φ = 529035312960.

The previous prime is 645330206603. The next prime is 645330206639. The reversal of 645330206633 is 336602033546.

It is not a de Polignac number, because 645330206633 - 2⁸ = 645330206377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (645330206639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13453853 + ... + 13501733.

It is an arithmetic number, because the mean of its divisors is an integer number (32642117040).

Almost surely, 2^645330206633 is an apocalyptic number.

It is an amenable number.

645330206633 is a deficient number, since it is larger than the sum of its proper divisors (138080602327).

645330206633 is a wasteful number, since it uses less digits than its factorization.

645330206633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59877 (or 59870 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 41.

The spelling of 645330206633 in words is "six hundred forty-five billion, three hundred thirty million, two hundred six thousand, six hundred thirty-three".