66300560 has 20 divisors (see below), whose sum is σ = 154148988. Its totient is φ = 26520192.

The previous prime is 66300529. The next prime is 66300593. The reversal of 66300560 is 6500366.

It can be written as a sum of positive squares in 2 ways, for example, as 47499664 + 18800896 = 6892^2 + 4336^2 .

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

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, 414299 + ... + 414458.

Almost surely, 2^66300560 is an apocalyptic number.

It is an amenable number.

66300560 is an abundant number, since it is smaller than the sum of its proper divisors (87848428).

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

66300560 is a wasteful number, since it uses less digits than its factorization.

66300560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828770 (or 828764 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 66300560 is about 8142.5155818089. The cubic root of 66300560 is about 404.7365252742.

The spelling of 66300560 in words is "sixty-six million, three hundred thousand, five hundred sixty".