645030927 has 12 divisors (see below), whose sum is σ = 933229440. Its totient is φ = 429319968.

The previous prime is 645030913. The next prime is 645030959. The reversal of 645030927 is 729030546.

645030927 is a `hidden beast` number, since 64 + 503 + 0 + 92 + 7 = 666.

It is not a de Polignac number, because 645030927 - 2¹⁴ = 645014543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 645030891 and 645030900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645030227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52527 + ... + 63632.

It is an arithmetic number, because the mean of its divisors is an integer number (77769120).

Almost surely, 2^645030927 is an apocalyptic number.

645030927 is a deficient number, since it is larger than the sum of its proper divisors (288198513).

645030927 is a wasteful number, since it uses less digits than its factorization.

645030927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116782 (or 116779 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 645030927 is about 25397.4590658200. The cubic root of 645030927 is about 864.0260690115.

The spelling of 645030927 in words is "six hundred forty-five million, thirty thousand, nine hundred twenty-seven".