645114612 has 12 divisors (see below), whose sum is σ = 1505267456. Its totient is φ = 215038200.

The previous prime is 645114583. The next prime is 645114637. The reversal of 645114612 is 216411546.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 645114612.

It is a congruent number.

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, 26879764 + ... + 26879787.

Almost surely, 2^645114612 is an apocalyptic number.

It is an amenable number.

645114612 is an abundant number, since it is smaller than the sum of its proper divisors (860152844).

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

645114612 is a wasteful number, since it uses less digits than its factorization.

645114612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53759558 (or 53759556 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 645114612 is about 25399.1065197184. The cubic root of 645114612 is about 864.0634330571.

The spelling of 645114612 in words is "six hundred forty-five million, one hundred fourteen thousand, six hundred twelve".