645846912 has 64 divisors (see below), whose sum is σ = 1906155600. Its totient is φ = 215281152.

The previous prime is 645846893. The next prime is 645846931. The reversal of 645846912 is 219648546.

645846912 is a `hidden beast` number, since 6 + 4 + 584 + 69 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (645846893) and next prime (645846931).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89983 + ... + 96894.

Almost surely, 2^645846912 is an apocalyptic number.

It is an amenable number.

645846912 is an abundant number, since it is smaller than the sum of its proper divisors (1260308688).

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

645846912 is a wasteful number, since it uses less digits than its factorization.

645846912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186900 (or 186882 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 645846912 is about 25413.5182924364. The cubic root of 645846912 is about 864.3902557996.

The spelling of 645846912 in words is "six hundred forty-five million, eight hundred forty-six thousand, nine hundred twelve".