66000573 has 6 divisors (see below), whose sum is σ = 95334174. Its totient is φ = 44000376.

The previous prime is 66000569. The next prime is 66000587. The reversal of 66000573 is 37500066.

66000573 is a `hidden beast` number, since 6 + 600 + 0 + 57 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 57108249 + 8892324 = 7557^2 + 2982^2 .

It is not a de Polignac number, because 66000573 - 2² = 66000569 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66000523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3666690 + ... + 3666707.

It is an arithmetic number, because the mean of its divisors is an integer number (15889029).

Almost surely, 2^66000573 is an apocalyptic number.

It is an amenable number.

66000573 is a deficient number, since it is larger than the sum of its proper divisors (29333601).

66000573 is a wasteful number, since it uses less digits than its factorization.

66000573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333403 (or 7333400 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 66000573 is about 8124.0736702716. The cubic root of 66000573 is about 404.1251715692.

The spelling of 66000573 in words is "sixty-six million, five hundred seventy-three", and thus it is an aban number.