66086560 has 48 divisors (see below), whose sum is σ = 164354400. Its totient is φ = 25042176.

The previous prime is 66086533. The next prime is 66086569. The reversal of 66086560 is 6568066.

It is not an unprimeable number, because it can be changed into a prime (66086569) 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, 7830 + ... + 13909.

It is an arithmetic number, because the mean of its divisors is an integer number (3424050).

Almost surely, 2^66086560 is an apocalyptic number.

It is an amenable number.

66086560 is an abundant number, since it is smaller than the sum of its proper divisors (98267840).

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

66086560 is a wasteful number, since it uses less digits than its factorization.

66086560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21773 (or 21765 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 66086560 is about 8129.3640587687. The cubic root of 66086560 is about 404.3005964666.

The spelling of 66086560 in words is "sixty-six million, eighty-six thousand, five hundred sixty".