645325760 has 56 divisors (see below), whose sum is σ = 1586276736. Its totient is φ = 249799680.

The previous prime is 645325741. The next prime is 645325787. The reversal of 645325760 is 67523546.

645325760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 22607 + ... + 42446.

Almost surely, 2^645325760 is an apocalyptic number.

It is an amenable number.

645325760 is an abundant number, since it is smaller than the sum of its proper divisors (940950976).

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

645325760 is a wasteful number, since it uses less digits than its factorization.

645325760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65101 (or 65091 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 38.

The square root of 645325760 is about 25403.2627825640. The cubic root of 645325760 is about 864.1576929819.

The spelling of 645325760 in words is "six hundred forty-five million, three hundred twenty-five thousand, seven hundred sixty".