609928564 has 24 divisors (see below), whose sum is σ = 1221111360. Its totient is φ = 261129216.

The previous prime is 609928507. The next prime is 609928573. The reversal of 609928564 is 465829906.

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, 17844 + ... + 39220.

It is an arithmetic number, because the mean of its divisors is an integer number (50879640).

Almost surely, 2^609928564 is an apocalyptic number.

It is an amenable number.

609928564 is an abundant number, since it is smaller than the sum of its proper divisors (611182796).

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

609928564 is a wasteful number, since it uses less digits than its factorization.

609928564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22407 (or 22405 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 609928564 is about 24696.7318485665. The cubic root of 609928564 is about 848.0595013577.

The spelling of 609928564 in words is "six hundred nine million, nine hundred twenty-eight thousand, five hundred sixty-four".