66084560 has 40 divisors (see below), whose sum is σ = 158608896. Its totient is φ = 25580160.

The previous prime is 66084541. The next prime is 66084569. The reversal of 66084560 is 6548066.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 66084560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66084569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10844 + ... + 15803.

Almost surely, 2^66084560 is an apocalyptic number.

It is an amenable number.

66084560 is an abundant number, since it is smaller than the sum of its proper divisors (92524336).

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

66084560 is a wasteful number, since it uses less digits than its factorization.

66084560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26691 (or 26685 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 66084560 is about 8129.2410469859. The cubic root of 66084560 is about 404.2965179300.

The spelling of 66084560 in words is "sixty-six million, eighty-four thousand, five hundred sixty".