645003643062 has 32 divisors (see below), whose sum is σ = 1293564602880. Its totient is φ = 214408464480.

The previous prime is 645003643001. The next prime is 645003643069. The reversal of 645003643062 is 260346300546.

It is a self number, because there is not a number n which added to its sum of digits gives 645003643062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645003643069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38060563 + ... + 38077505.

It is an arithmetic number, because the mean of its divisors is an integer number (40423893840).

Almost surely, 2^645003643062 is an apocalyptic number.

645003643062 is an abundant number, since it is smaller than the sum of its proper divisors (648560959818).

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

645003643062 is a wasteful number, since it uses less digits than its factorization.

645003643062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34068.

The product of its (nonzero) digits is 311040, while the sum is 39.

The spelling of 645003643062 in words is "six hundred forty-five billion, three million, six hundred forty-three thousand, sixty-two".