66000572 has 24 divisors (see below), whose sum is σ = 126932400. Its totient is φ = 29778560.

The previous prime is 66000569. The next prime is 66000587. The reversal of 66000572 is 27500066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554 + ... + 11502.

It is an arithmetic number, because the mean of its divisors is an integer number (5288850).

Almost surely, 2^66000572 is an apocalyptic number.

66000572 is the 4343-rd centered heptagonal number.

It is an amenable number.

66000572 is a deficient number, since it is larger than the sum of its proper divisors (60931828).

66000572 is a wasteful number, since it uses less digits than its factorization.

66000572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11101 (or 11099 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 66000572 is about 8124.0736087261. The cubic root of 66000572 is about 404.1251695282.

The spelling of 66000572 in words is "sixty-six million, five hundred seventy-two", and thus it is an aban number.