609508560 has 80 divisors (see below), whose sum is σ = 1904449536. Its totient is φ = 161247744.

The previous prime is 609508499. The next prime is 609508561. The reversal of 609508560 is 65805906.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609508561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20482 + ... + 40478.

Almost surely, 2^609508560 is an apocalyptic number.

609508560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609508560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952224768).

609508560 is an abundant number, since it is smaller than the sum of its proper divisors (1294940976).

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

609508560 is a wasteful number, since it uses less digits than its factorization.

609508560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20140 (or 20134 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 609508560 is about 24688.2271538480. The cubic root of 609508560 is about 847.8647954016.

The spelling of 609508560 in words is "six hundred nine million, five hundred eight thousand, five hundred sixty".