65536560 has 80 divisors (see below), whose sum is σ = 225744480. Its totient is φ = 17475840.

The previous prime is 65536517. The next prime is 65536561. The reversal of 65536560 is 6563556.

It is a happy number.

65536560 is a `hidden beast` number, since 65 + 5 + 36 + 560 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (65536561) 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, 13011 + ... + 17330.

It is an arithmetic number, because the mean of its divisors is an integer number (2821806).

Almost surely, 2^65536560 is an apocalyptic number.

65536560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65536560 is an abundant number, since it is smaller than the sum of its proper divisors (160207920).

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

65536560 is a wasteful number, since it uses less digits than its factorization.

65536560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30363 (or 30351 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 65536560 is about 8095.4653973691. The cubic root of 65536560 is about 403.1758843286.

The spelling of 65536560 in words is "sixty-five million, five hundred thirty-six thousand, five hundred sixty".