609720560 has 20 divisors (see below), whose sum is σ = 1417600488. Its totient is φ = 243888192.

The previous prime is 609720539. The next prime is 609720611. The reversal of 609720560 is 65027906.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×609720560² = 743518322573427200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 609720560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3810674 + ... + 3810833.

Almost surely, 2^609720560 is an apocalyptic number.

It is an amenable number.

609720560 is an abundant number, since it is smaller than the sum of its proper divisors (807879928).

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

609720560 is a wasteful number, since it uses less digits than its factorization.

609720560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7621520 (or 7621514 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 609720560 is about 24692.5203249891. The cubic root of 609720560 is about 847.9630857908.

The spelling of 609720560 in words is "six hundred nine million, seven hundred twenty thousand, five hundred sixty".